Pass glibc pre-commit checks

This is needed for the next patch which updates copyright dates.
* assert/test-assert-2.c: Remove trailing white space.
* elf/tst-startup-errno.c: Remove trailing empty lines.

assert/test-assert-2.c

@@ -123,7 +123,7 @@ check_posix (const char *buf, int rv, int line,
   TEST_VERIFY (strstr (buf, linestr) != NULL);
   TEST_VERIFY (strstr (buf, funcname) != NULL);
   TEST_VERIFY (strstr (buf, testarg) != NULL);
-  
+
 }
 
 static void

elf/tst-startup-errno.c

@@ -55,4 +55,3 @@ main (void)
 
   return 0;
 }
-