Fix comments

These comments should indicate which functions they really wrap.
An alternative would be to remove the line completely to avoid
future copy&paste mistakes.

Signed-off-by: Samanta Navarro <ferivoz@riseup.net>

libmisc/xgetXXbyYY.c

@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provides wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the name or name_r functions.
  */
 
 #include <unistd.h>

libmisc/xgetgrgid.c

@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provides wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getgrgid or getgrgid_r functions.
  */
 
 #include <config.h>

libmisc/xgetgrnam.c

@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provides wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getgrnam or getgrnam_r functions.
  */
 
 #include <config.h>

libmisc/xgetpwuid.c

@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provides wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getpwuid or getpwuid_r functions.
  */
 
 #include <config.h>

libmisc/xgetspnam.c

@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provides wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getspnam or getspnam_r functions.
  */
 
 #include <config.h>