detect/http2: call correct free function on errors

Fix cases where the wrong free function was being called in error
handlers.

DetectHTTP2sizeUpdateSetup was calling DetectHTTP2settingsFree instead
of DetectHTTP2sizeUpdateFree in error case.

Moving http2.priority and http2.window to multi-integers, instead
of basic integers only modified the Free callback, but the
Setup function was still using the direct call to old obsolete free
function.
Using the callback Free abstration in Setup, allows to be
consistent and have less code to change.

src/detect-http2.c

@@ -345,13 +345,13 @@ static int DetectHTTP2prioritySetup (DetectEngineCtx *de_ctx, Signature *s, cons
     if (SCDetectSignatureSetAppProto(s, ALPROTO_HTTP2) != 0)
         return -1;
 
-    DetectU8Data *prio = SCDetectU8ArrayParse(str);
+    void *prio = SCDetectU8ArrayParse(str);
     if (prio == NULL)
         return -1;
 
     if (SCSigMatchAppendSMToList(de_ctx, s, DETECT_HTTP2_PRIORITY, (SigMatchCtx *)prio,
                 g_http2_match_buffer_id) == NULL) {
-        SCDetectU8Free(prio);
+        DetectHTTP2priorityFree(NULL, prio);
         return -1;
     }
 
@@ -397,14 +397,14 @@ static int DetectHTTP2windowSetup (DetectEngineCtx *de_ctx, Signature *s, const
     if (SCDetectSignatureSetAppProto(s, ALPROTO_HTTP2) != 0)
         return -1;
 
-    DetectU32Data *wu = SCDetectU32ArrayParse(str);
+    void *wu = SCDetectU32ArrayParse(str);
     if (wu == NULL)
         return -1;
 
     // use g_http2_complete_buffer_id as we may have window changes in any state
     if (SCSigMatchAppendSMToList(de_ctx, s, DETECT_HTTP2_WINDOW, (SigMatchCtx *)wu,
                 g_http2_complete_buffer_id) == NULL) {
-        SCDetectU32Free(wu);
+        DetectHTTP2windowFree(NULL, wu);
         return -1;
     }
 
@@ -450,13 +450,13 @@ static int DetectHTTP2sizeUpdateSetup (DetectEngineCtx *de_ctx, Signature *s, co
     if (SCDetectSignatureSetAppProto(s, ALPROTO_HTTP2) != 0)
         return -1;
 
-    void *su = SCDetectU64Parse(str);
+    DetectU64Data *su = SCDetectU64Parse(str);
     if (su == NULL)
         return -1;
 
     if (SCSigMatchAppendSMToList(de_ctx, s, DETECT_HTTP2_SIZEUPDATE, (SigMatchCtx *)su,
                 g_http2_match_buffer_id) == NULL) {
-        DetectHTTP2settingsFree(NULL, su);
+        DetectHTTP2sizeUpdateFree(NULL, su);
         return -1;
     }