Bugfix reported by Basse; adding a new strip in Sequencer didn't initialize

the sequence "Mult" value properly when the "Properties" Panel was open.
That resulted in images displaying black...

source/blender/src/editseq.c

@@ -441,7 +441,8 @@ static Sequence *alloc_sequence(int cfra, int machine)
 	seq->flag= SELECT;
 	seq->start= cfra;
 	seq->machine= machine;
-
+	seq->mul= 1.0;
+	
 	return seq;
 }