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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6417 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_core.c

@@ -551,6 +551,9 @@ SWITCH_DECLARE(void) switch_core_runtime_loop(int bg)
 
 SWITCH_DECLARE(const char *) switch_core_mime_ext2type(const char *ext)
 {
+	if (!ext) {
+		return NULL;
+	}
 	return (const char *) switch_core_hash_find(runtime.mime_types, ext);
 }