Clean up gcc warning in MULTIBYTE code.

diff --git a/src/interfaces/libpq/fe-print.c b/src/interfaces/libpq/fe-print.c
index 8613e5c..fa358c7 100644 (file)
--- a/src/interfaces/libpq/fe-print.c
+++ b/src/interfaces/libpq/fe-print.c
@@ -9,7 +9,7 @@
  * didn't really belong there.
  *
  * IDENTIFICATION
- *       $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-print.c,v 1.20 1999/02/13 23:22:42 momjian Exp $
+ *       $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-print.c,v 1.21 1999/04/25 18:16:47 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -504,7 +504,7 @@ PQmblen(unsigned char *s)
        int                     encoding = -1;
 
        str = getenv("PGCLIENTENCODING");
-       if (str && *str != NULL)
+       if (str && *str != '\0')
                encoding = pg_char_to_encoding(str);
        if (encoding < 0)
                encoding = MULTIBYTE;