Fixed wrong type of the "line" field.

The new type ngx_uint_t was supposed when formatting the line number.

src/mail/ngx_mail.h

@@ -117,7 +117,7 @@ typedef struct {
     ngx_str_t               server_name;
 
     u_char                 *file_name;
-    ngx_int_t               line;
+    ngx_uint_t              line;
 
     ngx_resolver_t         *resolver;
     ngx_log_t              *error_log;

src/stream/ngx_stream.h

@@ -136,7 +136,7 @@ typedef struct {
     ngx_stream_conf_ctx_t         *ctx;
 
     u_char                        *file_name;
-    ngx_int_t                      line;
+    ngx_uint_t                     line;
 
     ngx_flag_t                     tcp_nodelay;