Remove trailing whitespace

man2/prctl.2

@@ -159,7 +159,7 @@ or \fBPR_UNALIGN_SIGBUS\fP to generate
 on unaligned user access.
 .TP
 .B PR_GET_UNALIGN
-(see 
+(see
 .B PR_SET_UNALIGN
 for information on versions and architectures)
 Get unaligned access control bits from \fIarg2\fP.

man2/sched_setscheduler.2

@@ -348,7 +348,7 @@ becoming equipped with real-time capabilities,
 most of which are derived from the former
 realtime-preempt patches developed by Ingo Molnar, Thomas Gleixner and
 others.
-Until the patches have been completely merged into the 
+Until the patches have been completely merged into the
 mainline kernel
 (this is expected to be around kernel version 2.6.24 or 2.6.25),
 the realtime-preempt patches must be installed to achieve the best

man3/malloc.3

@@ -51,7 +51,7 @@ If
 .I nmemb
 or
 .I size
-is 0, then 
+is 0, then
 .BR calloc ()
 returns either NULL,
 .\" glibc does this:
@@ -65,7 +65,7 @@ bytes and returns a pointer to the allocated memory.
 The memory is not cleared.
 If
 .I size
-is 0, then 
+is 0, then
 .BR malloc ()
 returns either NULL,
 .\" glibc does this:

man3/readdir.3

@@ -109,7 +109,7 @@ are specified in POSIX.1-2001.
 The remaining fields are available on many, but not all systems.
 Under glibc,
 programs can check for the availability of the fields not defined
-in POSIX.1 by testing whether the macros 
+in POSIX.1 by testing whether the macros
 .BR _DIRENT_HAVE_D_NAMLEN ,
 .BR _DIRENT_HAVE_D_RECLEN ,
 .BR _DIRENT_HAVE_D_OFF ,