Fix carla-lv2 pre-run with 0 frames

Signed-off-by: falkTX <falktx@falktx.com>

source/utils/CarlaLv2Utils.hpp

@@ -972,9 +972,6 @@ public:
             handleParameterValueChanged(i, curValue);
         }
 
-        if (frames == 0)
-            return false;
-
         // init event out data
         if (fPorts.numMidiOuts > 0 || fPorts.hasUI)
         {
@@ -995,6 +992,9 @@ public:
             }
         }
 
+        if (frames == 0)
+            return false;
+
         return true;
     }