Fix whitespace issues

Cleanup trailing whitespaces, indentation that uses spaces before tabs,
and blank lines at EOF.  Make the project free of warnings reported by
git diff --check 4b825dc642cb6eb9a060e54bf8d69288fbee4904 HEAD

5 files changed, 9 insertions, 9 deletions

diff --git a/doc/man/pam_chauthtok.3.xml b/doc/man/pam_chauthtok.3.xml
index 7e20070b..b9922a6c 100644
--- a/doc/man/pam_chauthtok.3.xml
+++ b/doc/man/pam_chauthtok.3.xml
@@ -35,7 +35,7 @@
       associated with the handle <emphasis>pamh</emphasis>).
     </para>
     <para>
-      The <emphasis>pamh</emphasis> argument is an authentication 
+      The <emphasis>pamh</emphasis> argument is an authentication
       handle obtained by a prior call to pam_start().
       The flags argument is the binary or of zero or more of the
       following values:
diff --git a/doc/man/pam_get_user.3.xml b/doc/man/pam_get_user.3.xml
index ff8be694..9c5830e9 100644
--- a/doc/man/pam_get_user.3.xml
+++ b/doc/man/pam_get_user.3.xml
@@ -42,7 +42,7 @@
       name of the user specified by
       <citerefentry>
         <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum>
-      </citerefentry>. If no user was specified it what 
+      </citerefentry>. If no user was specified it what
       <function>pam_get_item (pamh, PAM_USER, ... );</function> would
       have returned. If this is NULL it obtains the username via the
       <citerefentry>
@@ -70,14 +70,14 @@
     </itemizedlist>
     <para>
       By whatever means the username is obtained, a pointer to it is
-      returned as the contents of <emphasis>*user</emphasis>. Note, 
-      this memory should <emphasis remap="B">not</emphasis> be 
+      returned as the contents of <emphasis>*user</emphasis>. Note,
+      this memory should <emphasis remap="B">not</emphasis> be
       <emphasis>free()</emphasis>'d or <emphasis>modified</emphasis>
       by the module.
     </para>
     <para>
       This function sets the <emphasis>PAM_USER</emphasis> item
-      associated with the 
+      associated with the
       <citerefentry>
         <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum>
       </citerefentry> and
diff --git a/doc/man/pam_set_data.3.xml b/doc/man/pam_set_data.3.xml
index d6d224e7..c20068c6 100644
--- a/doc/man/pam_set_data.3.xml
+++ b/doc/man/pam_set_data.3.xml
@@ -40,7 +40,7 @@
     <title>DESCRIPTION</title>
     <para>
       The <function>pam_set_data</function> function associates a pointer
-      to an object with the (hopefully) unique string 
+      to an object with the (hopefully) unique string
       <emphasis>module_data_name</emphasis> in the PAM context specified
       by the <emphasis>pamh</emphasis> argument.
     </para>
diff --git a/doc/man/pam_sm_authenticate.3.xml b/doc/man/pam_sm_authenticate.3.xml
index 37c77576..9121aed2 100644
--- a/doc/man/pam_sm_authenticate.3.xml
+++ b/doc/man/pam_sm_authenticate.3.xml
@@ -62,7 +62,7 @@
             Return <emphasis remap='B'>PAM_AUTH_ERR</emphasis> if the
             database of authentication tokens for this authentication
             mechanism has a <emphasis>NULL</emphasis> entry for the user.
-            Without this flag, such a <emphasis>NULL</emphasis> token 
+            Without this flag, such a <emphasis>NULL</emphasis> token
             will lead to a success without the user being prompted.
           </para>
         </listitem>
@@ -95,7 +95,7 @@
         <listitem>
           <para>
             The modules were not able to access the authentication
-            information. This might be due to a network or hardware 
+            information. This might be due to a network or hardware
             failure etc.
           </para>
         </listitem>
diff --git a/doc/man/pam_xauth_data.3.xml b/doc/man/pam_xauth_data.3.xml
index 0cd6730b..505985e4 100644
--- a/doc/man/pam_xauth_data.3.xml
+++ b/doc/man/pam_xauth_data.3.xml
@@ -35,7 +35,7 @@ struct pam_xauth_data {
     <title>DESCRIPTION</title>
     <para>
       The <function>pam_xauth_data</function> structure contains X
-      authentication data used to make a connection to an X display.  
+      authentication data used to make a connection to an X display.
       Using this mechanism, an application can communicate X
       authentication data to PAM service modules.  This allows modules to
       make a connection to the user's X display in order to label the