smtp.c: Have function returning char pointer return NULL, not 0.

diff --git a/mts/smtp/smtp.c b/mts/smtp/smtp.c
index f9500bc625230caf3eca92bba645301b671fc694..2f57483d61be82ab1ef4e6f1ff586c5c12e10664 100644 (file)
--- a/mts/smtp/smtp.c
+++ b/mts/smtp/smtp.c
@@ -935,7 +935,7 @@ EHLOset (char *s)
        }
     }
 
-    return 0;
+    return NULL;
 }
 
 /*