Silenced a few compiler warnings

source/blender/blenkernel/intern/modifier.c

@@ -4334,7 +4334,7 @@ static void waveModifier_do(
 	float minfac =
 	  (float)(1.0 / exp(wmd->width * wmd->narrow * wmd->width * wmd->narrow));
 	float lifefac = wmd->height;
-	float (*tex_co)[3];
+	float (*tex_co)[3] = NULL;
 
 	if(wmd->flag & MOD_WAVE_NORM && ob->type == OB_MESH)
 		mvert = dm->getVertArray(dm);

source/blender/python/api2_2x/Draw.c

@@ -738,7 +738,7 @@ void BPY_spacescript_do_pywin_event( SpaceScript * sc, unsigned short event,
 static void exec_but_callback(void *pyobj, void *data)
 {
 	PyObject *result;
-	PyObject * pyvalue;
+	PyObject *pyvalue = NULL;
 	uiBut *but = (uiBut *)data;
 	PyObject *arg;
 	PyObject *callback = (PyObject *)pyobj;