From ad1f9204a2f00c7c703f202e9c692e9620ee1f56 Mon Sep 17 00:00:00 2001
From: Emmanuele Bassi <ebassi@gnome.org>
Date: Wed, 7 Dec 2016 15:12:15 +0000
Subject: [PATCH] Avoid C99 declaration after statement

The rest of the library is C89-only, so we should keep it that way.
---
 src/dispatch_common.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/dispatch_common.c b/src/dispatch_common.c
index ba6fca3..4f58be2 100644
--- a/src/dispatch_common.c
+++ b/src/dispatch_common.c
@@ -347,11 +347,12 @@ epoxy_conservative_gl_version(void)
 bool
 epoxy_extension_in_string(const char *extension_list, const char *ext)
 {
-    if (!extension_list)
-        return false;
     const char *ptr = extension_list;
     int len = strlen(ext);
 
+    if (extension_list == NULL || *extension_list == '\0')
+        return false;
+
     /* Make sure that don't just find an extension with our name as a prefix. */
     while (true) {
         ptr = strstr(ptr, ext);