Add support for horizontal scroll wheel. (Bjorn Winckler)
diff --git a/src/screen.c b/src/screen.c
index 2577218..ca5827f 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -2822,7 +2822,7 @@
     int		is_concealing	= FALSE;
     int		boguscols	= 0;	/* nonexistent columns added to force
 					   wrapping */
-    int		vcol_off        = 0;	/* offset for concealed characters */
+    int		vcol_off	= 0;	/* offset for concealed characters */
     int		did_wcol	= FALSE;
 # define VCOL_HLC (vcol - vcol_off)
 #else