Fix line wrapping of extensions list in usage message

diff --git a/xdpyinfo.c b/xdpyinfo.c
index c37d7e8..093b7c1 100644 (file)
--- a/xdpyinfo.c
+++ b/xdpyinfo.c
@@ -1425,12 +1425,15 @@ print_known_extensions(FILE *f)
     int i, col;
     for (i = 0, col = 6; i < num_known_extensions; i++)
     {
-       if ((col += strlen(known_extensions[i].extname)+1) > 79)
+       int extlen = strlen(known_extensions[i].extname) + 1;
+       
+       if ((col + extlen) > 79)
        {
                col = 6;
                fprintf(f, "\n     ");
        }
        fprintf(f, "%s ", known_extensions[i].extname);
+       col += extlen;
     }
 }