From 67053e6ed000b6c9d8cbebd8f6fee8f4fb1824c0 Mon Sep 17 00:00:00 2001
From: Victor Julien <victor@inliniac.net>
Date: Wed, 8 Jan 2014 18:10:16 +0100
Subject: [PATCH] Fix AppLayerProtoDetectPMFreeSignature related valgrind
 errors

---
 src/app-layer-detect-proto.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/app-layer-detect-proto.c b/src/app-layer-detect-proto.c
index e9e2c637c3..e89ecda0e1 100644
--- a/src/app-layer-detect-proto.c
+++ b/src/app-layer-detect-proto.c
@@ -1120,7 +1120,10 @@ static int AppLayerProtoDetectPMPrepareMpm(AppLayerProtoDetectPMCtx *ctx)
 static void AppLayerProtoDetectPMFreeSignature(AppLayerProtoDetectPMSignature *sig)
 {
     SCEnter();
-    DetectContentFree(sig->cd);
+    if (sig == NULL)
+        SCReturn;
+    if (sig->cd)
+        DetectContentFree(sig->cd);
     SCFree(sig);
     SCReturn;
 }
@@ -1444,8 +1447,8 @@ int AppLayerProtoDetectDeSetup(void)
             mpm_table[pm_ctx->mpm_ctx.mpm_type].DestroyCtx(pm_ctx->mpm_ctx.ctx);
             for (id = 0; id < pm_ctx->max_pat_id; id++) {
                 sig = pm_ctx->map[id];
-                next_sig = sig->next;
                 while (sig != NULL) {
+                    next_sig = sig->next;
                     AppLayerProtoDetectPMFreeSignature(sig);
                     sig = next_sig;
                 }