Fix uninitialized vars in calls to fl_clip_box() (issue #6)

The main fixes are only to avoid static code analyzer warnings reported
in issue #5, but there are also minor bug fixes included. These bug
fixes are more of theoretical concerns though.

Close #6.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx b/src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx
index a4f4a472c..0533b3b5f 100644
--- a/src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx
+++ b/src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx
@@ -3,7 +3,7 @@
 //
 // Windows image drawing code for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2018 by Bill Spitzak and others.
+// Copyright 1998-2020 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -125,8 +125,8 @@ static void innards(const uchar *buf, int X, int Y, int W, int H,
 
   if (!linedelta) linedelta = W*fl_abs(delta);
 
-  int x, y, w, h;
-  fl_clip_box(X,Y,W,H,x,y,w,h);
+  int x = 0, y = 0, w = 0, h = 0;
+  fl_clip_box(X, Y, W, H, x, y, w, h);
   if (w<=0 || h<=0) return;
   if (buf) buf += (x-X)*delta + (y-Y)*linedelta;