Fixed comment.

Author: arut

src/ngx_python.c

@@ -11,9 +11,8 @@
  * practice.  Python headers deliberately define the following macros:
  * _GNU_SOURCE, _POSIX_C_SOURCE, _XOPEN_SOURCE.
  * When compiling on Linux, they are defined by nginx or system headers
- * with Python possibly redefining them.  Since nginx is built with
- * -Werror compilation option, macros redefinition causes compilation
- * errors on some Linux systems.
+ * with Python possibly redefining them.  Since nginx is built with -Werror
+ * compilation option, macros redefinition causes compilation errors.
  */
 
 #include <ngx_config.h>