* malloc/memusagestat.c (main): Use return instead of exit to

avoid warning. 
* io/pwd.c (main): Likewise. 
* iconvdata/tst-table-from.c (main): Likewise. 
* ctype/test_ctype.c (main): Likewise. 
* setjmp/tst-setjmp.c (main): Likewise. 
* signal/tst-signal.c (main): Likewise. 
* stdlib/tst-strtol.c (main): Likewise. 
* stdlib/tst-strtod.c (main): Likewise. 
* stdlib/tst-strtoll.c (main): Likewise. 
* stdlib/tst-xpg-basename.c (main): Likewise. 
* dirent/tst-seekdir.c (main): Likewise. 
* grp/testgrp.c (main): Likewise. 
* inet/test_ifindex.c (main): Likewise. 
* io/test-utime.c (main): Likewise. 
* posix/test-vfork.c (main): Likewise. 
* posix/testfnm.c (main): Likewise. 
* stdio-common/temptest.c (main): Likewise. 
* stdio-common/test_rdwr.c (main): Likewise. 
* stdio-common/tst-fileno.c (main): Likewise. 
* stdio-common/tst-sscanf.c (main): Likewise. 
* stdio-common/tstscanf.c (main): Likewise. 
* string/bug-strncat1.c (main): Likewise. 
* string/bug-strpbrk1.c (main): Likewise. 
* string/bug-strspn1.c (main): Likewise. 
* string/test-ffs.c (main): Likewise. 
* string/tst-inlcall.c (main): Likewise. 
* string/tst-svc.c (main): Likewise. 
* timezone/test-tz.c (main): Likewise. 
* wctype/test_wcfuncs.c (main): Likewise. 
* wctype/test_wctype.c (main): Likewise.
	* stdlib/tst-random.c: Add attribute noreturn to fail.

string/bug-strpbrk1.c

@@ -13,7 +13,7 @@ main (void)
 
   strpbrk (b++, "");
   if (b != a + 1)
-    exit (1);
+    return 1;
 
-  exit (0);
+  return 0;
 }