BLOCKS: Ensure that the program loaded callback is called when program passed to setProgram is identical to what's already loaded

modules/juce_blocks_basics/topology/internal/juce_BlockImplementation.cpp

@@ -271,8 +271,6 @@ public:
             return Result::ok();
         }
 
-        stopTimer();
-
         {
             std::unique_ptr<Program> p (newProgram);
 
@@ -284,6 +282,8 @@ public:
             std::swap (program, p);
         }
 
+        stopTimer();
+
         programSize = 0;
         isProgramLoaded = shouldSaveProgramAsDefault = false;