eina: eina_strlcat now work with NULL src.

ChangeLog

@@ -1,3 +1,8 @@
+2013-02-28  Cedric Bail
+
+	* eina_strlcat work with a NULL src.
+
+
 2013-02-26  Carsten Haitzler (The Rasterman)
 
         * Fix evas GL common engine to have a shader to do oversampling on

NEWS

@@ -114,6 +114,7 @@ Improvements:
     * edje: reduce memory consumption of Edje program handler.
     * eina, evas: improved support for 64bits system.
     * Evas GL engine downscale quality in smooth mode much improved with multisampling up to effectively 16x16 via shaders.
+    * eina: eina_strlcat now work with a NULL source.
 
 Fixes:
     * Fix a memory leak in ecore_con_dns when using ecore_con_server_connect

src/lib/eina/eina_str.c

@@ -347,16 +347,19 @@ eina_strlcat(char *dst, const char *src, size_t siz)
    n = siz - dlen;
 
    if (n == 0)
-      return(dlen + strlen(s));
+     return(dlen + (s ? strlen(s) : 0));
 
-   while (*s != '\0') {
-        if (n != 1)
-          {
-             *d++ = *s;
-             n--;
-          }
+   if (s != NULL)
+     {
+        while (*s != '\0') {
+           if (n != 1)
+             {
+                *d++ = *s;
+                n--;
+             }
 
-        s++;
+           s++;
+        }
      }
    *d = '\0';