RemoteVstPlugin: fix build failure due to out-of-bounds-array-access-warning

Newer versions of GCC seem to assume an array size of 0 for arrays whose
size is not specified explicitely. This causes a warning about an
out-of-bounds array access.

include/aeffectx.h

@@ -175,7 +175,7 @@ public:
 	// 04
 	void *reserved;
 	// 08
-	VstEvent * events[];
+	VstEvent* events[1];
 
 } ;