Fixed yon_char_replace function

source/libublsettings-char.c

@@ -248,16 +248,16 @@ char *yon_char_replace(char *source, char *find, char*replace){
         int replace_size = strlen(replace);
         char *final=NULL;
         char *temp=NULL;
-        if(!strstr(replace,find)){
         while ((final=strstr(source,find))){
             int final_size = strlen(final);
-                temp=malloc(final_size+replace_size);
+            temp=malloc(source_size-final_size+replace_size);
             memset(temp,0,source_size-final_size+replace_size);
             memcpy(temp,source,source_size-final_size);
-                temp=yon_char_append(temp,replace);
+            char *tmp = yon_char_append(temp,replace);
+            if (temp) free(temp);
+            temp = tmp;
             source=yon_char_append(temp,final+strlen(find));
-            }
+            free(temp);
-            
         }
     }
     return source;