Fix coverity warnings.

diff --git a/src/tools/pgproto/read.c b/src/tools/pgproto/read.c
index d0ffee39dc3b14b81489f8dbb38a5591d0e9a2bc..c9238d4816abbaebdc4214bb42f9bf246c523981 100644 (file)
--- a/src/tools/pgproto/read.c
+++ b/src/tools/pgproto/read.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018     Tatsuo Ishii
+ * Copyright (c) 2017-2019     Tatsuo Ishii
  *
  * Permission to use, copy, modify, and distribute this software and
  * its documentation for any purpose and without fee is hereby
@@ -178,7 +178,11 @@ read_until_ready_for_query(PGconn *conn, int timeout)
                                break;
 
                        case 'Z':                       /* Ready for Query */
-                               len = read_int32(conn);
+                               if (read_int32(conn) < 0)
+                               {
+                                       fprintf(stderr, "read_int32() failed\n");
+                                       exit(1);
+                               }
                                c = read_char(conn);
                                fprintf(stderr, "<= BE ReadyForQuery(%c)\n", c);
                                cont = 0;