Fix sysdeps/mips/__longjmp.c warning.

This patch fixes

../sysdeps/mips/__longjmp.c:27:1: warning: function declaration isn't a prototype [-Wstrict-prototypes]

which arose I think from the MIPS16 changes (renaming the function to
____longjmp with an alias __longjmp, so a prior header prototype for
__longjmp no longer sufficed to prevent a warning).  I've made the
function use a prototype definition, which is what we want for all
function definitions in glibc anyway.

Tested for MIPS.

	* sysdeps/mips/__longjmp.c (____longjmp): Use prototype
	definition.

1 files changed, 3 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 0797a15..5ec7f0d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2014-11-26  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/mips/__longjmp.c (____longjmp): Use prototype
+	definition.
+
 	* nptl/tst-cancel-self-cancelstate.c (do_test): Cast argument of
 	pthread_cleanup_push to void *.