[PATCH] fbdev: Coverity Bug 90

It's a false positive, but let's suppress it anyway.
Signed-off-by: NAntonino Daplas <adaplas@pol.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/video/modedb.c

@@ -791,8 +791,9 @@ struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
 			if (diff > d) {
 				diff = d;
 				best = mode;
-			} else if (diff == d && mode->refresh > best->refresh)
-			    best = mode;
+			} else if (diff == d && best &&
+				   mode->refresh > best->refresh)
+				best = mode;
 		}
 	}
 	return best;