Added missing member initializer.

Was uninitialized and thus saved a debug image on every startup as the boolean value was mostly non-zero.

src/libprojectM/Renderer/Renderer.hpp

@@ -102,7 +102,7 @@ public:
     bool correction{ true };
 
     bool noSwitch{ false };
-    bool writeNextFrameToFile;
+    bool writeNextFrameToFile{ false };
 
     milliseconds lastTimeFPS{ nowMilliseconds() };
     milliseconds currentTimeFPS{ nowMilliseconds() };