[PATCH] m4_error: fix missing va_end

[Eric Blake]

Most va_end implementations are no-ops, so it probably didn't
affect many people, but POSIX requires all va_start to be
matched with va_end for the rare platform where va_end is not
a no-op.  Detected by Coverity.

* src/m4.c (m4_error, m4_error_at_line): Add missing va_end.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog |    5 +++++
 src/m4.c  |    2 ++
 2 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 894ca8b..862b516 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-04-29  Eric Blake  <address@hidden>
+
+       m4_error: fix missing va_end
+       * src/m4.c (m4_error, m4_error_at_line): Add missing va_end.
+
 2011-03-01  Eric Blake  <address@hidden>

        Release Version 1.4.16.
diff --git a/src/m4.c b/src/m4.c
index d7ad7cd..6f1645a 100644
--- a/src/m4.c
+++ b/src/m4.c
@@ -99,6 +99,7 @@ m4_error (int status, int errnum, const char *format, ...)
                   current_line, format, args);
   if (fatal_warnings && ! retcode)
     retcode = EXIT_FAILURE;
+  va_end (args);
 }

 /*-------------------------------.
@@ -114,6 +115,7 @@ m4_error_at_line (int status, int errnum, const char *file, 
int line,
   verror_at_line (status, errnum, line ? file : NULL, line, format, args);
   if (fatal_warnings && ! retcode)
     retcode = EXIT_FAILURE;
+  va_end (args);
 }

 #ifndef SIGBUS
-- 
1.7.4.4