ini_file_reader.c: fix empty string compare

HISTORY

@@ -1,4 +1,9 @@
 
+
+Version 1.41  2019-09-22
+  * change CIDR network_bits range from [16, 32) to [10, 32)
+  * ini_file_reader.c: fix empty string compare
+
 Version 1.40  2018-11-09
   * add function conn_pool_parse_server_info and conn_pool_load_server_info
   * support directive: #@add_annotation, for example:

src/ini_file_reader.c

@@ -851,14 +851,14 @@ static int iniAddAnnotation(char *params)
 
     func_name = fc_trim(cols[0]);
     library = fc_trim(cols[1]);
-    if (func_name == '\0')
+    if (*func_name == '\0')
     {
         logError("file: "__FILE__", line: %d, "
                 "empty func name, correct format: "
                 "#@add_annotation FUNC_NAME library ...", __LINE__);
         return EINVAL;
     }
-    if (library == '\0')
+    if (*library == '\0')
     {
         logError("file: "__FILE__", line: %d, "
                 "empty library, correct format: "