[yelp] Initialize ws_start variable before returning it

[David King <davidk src gnome org>]

commit 0b3b23c5b389dd5524c6674fc6301510181f2de4
Author: Tomas Popela <tpopela redhat com>
Date:   Mon Jul 23 11:45:36 2018 +0200

    Initialize ws_start variable before returning it
    
    yelp-3.28.1/libyelp/yelp-man-parser.c:1194: var_decl: Declaring variable "ws_start" without initializer.
    yelp-3.28.1/libyelp/yelp-man-parser.c:1202: uninit_use: Using uninitialized value "ws_start".

 libyelp/yelp-man-parser.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/libyelp/yelp-man-parser.c b/libyelp/yelp-man-parser.c
index f8eb69f6..302ccb31 100644
--- a/libyelp/yelp-man-parser.c
+++ b/libyelp/yelp-man-parser.c
@@ -1193,7 +1193,7 @@ static gchar *
 find_contiguous_whitespace (gchar *text, guint ws_len)
 {
     guint counter = 0;
-    gchar *ws_start;
+    gchar *ws_start = NULL;
     while (*text) {
         if (g_unichar_isspace (g_utf8_get_char (text))) {
             if (!counter) ws_start = text;