lua: move function to common utils

LuaStateNeedProto function can be used for any protocol so let's
move it out of the http file.

src/util-lua-common.c

@@ -747,4 +747,24 @@ int LuaRegisterFunctions(lua_State *luastate)
     return 0;
 }
 
+int LuaStateNeedProto(lua_State *luastate, AppProto alproto)
+{
+    AppProto flow_alproto = 0;
+    int locked = 0;
+    Flow *flow = LuaStateGetFlow(luastate, &locked);
+    if (flow == NULL)
+        return LuaCallbackError(luastate, "internal error: no flow");
+
+    if (locked == LUA_FLOW_NOT_LOCKED_BY_PARENT) {
+        FLOWLOCK_RDLOCK(flow);
+        flow_alproto = flow->alproto;
+        FLOWLOCK_UNLOCK(flow);
+    } else {
+        flow_alproto = flow->alproto;
+    }
+
+    return (alproto == flow_alproto);
+
+}
+
 #endif /* HAVE_LUA */

src/util-lua-common.h

@@ -35,6 +35,8 @@ void LuaPushTableKeyValueArray(lua_State *luastate, const char *key, const uint8
 
 int LuaRegisterFunctions(lua_State *luastate);
 
+int LuaStateNeedProto(lua_State *luastate, AppProto alproto);
+
 #endif /* HAVE_LUA */
 
 #endif /* __UTIL_LUA_COMMON_H__ */

src/util-lua-http.c

@@ -56,26 +56,6 @@
 #include "util-lua.h"
 #include "util-lua-common.h"
 
-int LuaStateNeedProto(lua_State *luastate, AppProto alproto)
-{
-    AppProto flow_alproto = 0;
-    int locked = 0;
-    Flow *flow = LuaStateGetFlow(luastate, &locked);
-    if (flow == NULL)
-        return LuaCallbackError(luastate, "internal error: no flow");
-
-    if (locked == LUA_FLOW_NOT_LOCKED_BY_PARENT) {
-        FLOWLOCK_RDLOCK(flow);
-        flow_alproto = flow->alproto;
-        FLOWLOCK_UNLOCK(flow);
-    } else {
-        flow_alproto = flow->alproto;
-    }
-
-    return (alproto == flow_alproto);
-
-}
-
 static int HttpGetRequestHost(lua_State *luastate)
 {
     if (!(LuaStateNeedProto(luastate, ALPROTO_HTTP)))