[yelp] Avoid warning due to unnecessary comparison

[David King <davidk src gnome org>]

commit 0c714faf02b2c276208184c14be10026a508c480
Author: David King <amigadave amigadave com>
Date:   Mon Feb 9 21:42:41 2015 +0000

    Avoid warning due to unnecessary comparison

 libyelp/yelp-man-parser.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libyelp/yelp-man-parser.c b/libyelp/yelp-man-parser.c
index 1466d10..508487c 100644
--- a/libyelp/yelp-man-parser.c
+++ b/libyelp/yelp-man-parser.c
@@ -1050,7 +1050,7 @@ right_truncate_common (gchar *dst, const gchar *src)
     dst += len_dst - 1;
     src += len_src - 1;
 
-    while (k >= 0) {
+    while (k > 0) {
         if (*dst != *src) break;
         *dst = '\0';