Fix erroneous Assert() in syslogger process start in EXEC_BACKEND case,

per ITAGAKI Takahiro.  Also, rewrite syslogger_forkexec() in hopes of
eliminating the confusion in the first place.

src/backend/postmaster/syslogger.c

@@ -18,7 +18,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/postmaster/syslogger.c,v 1.39 2007/09/20 18:19:08 adunstan Exp $
+ *	  $PostgreSQL: pgsql/src/backend/postmaster/syslogger.c,v 1.40 2007/09/22 18:19:18 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -608,10 +608,8 @@ static pid_t
 syslogger_forkexec(void)
 {
 	char	   *av[10];
-	int			ac = 0,
-				bufc = 0,
-				i;
-	char		numbuf[2][32];
+	int			ac = 0;
+	char		filenobuf[32];
 
 	av[ac++] = "postgres";
 	av[ac++] = "--forklog";
@@ -620,21 +618,18 @@ syslogger_forkexec(void)
 	/* static variables (those not passed by write_backend_variables) */
 #ifndef WIN32
 	if (syslogFile != NULL)
-		snprintf(numbuf[bufc++], 32, "%d", fileno(syslogFile));
+		snprintf(filenobuf, sizeof(filenobuf), "%d",
+				 fileno(syslogFile));
 	else
-		strcpy(numbuf[bufc++], "-1");
+		strcpy(filenobuf, "-1");
 #else							/* WIN32 */
 	if (syslogFile != NULL)
-		snprintf(numbuf[bufc++], 32, "%ld",
+		snprintf(filenobuf, sizeof(filenobuf), "%ld",
 				 _get_osfhandle(_fileno(syslogFile)));
 	else
-		strcpy(numbuf[bufc++], "0");
+		strcpy(filenobuf, "0");
 #endif   /* WIN32 */
-
-	/* Add to the arg list */
-	Assert(bufc <= lengthof(numbuf));
-	for (i = 0; i < bufc; i++)
-		av[ac++] = numbuf[i];
+	av[ac++] = filenobuf;
 
 	av[ac] = NULL;
 	Assert(ac < lengthof(av));
@@ -652,7 +647,7 @@ syslogger_parseArgs(int argc, char *argv[])
 {
 	int			fd;
 
-	Assert(argc == 5);
+	Assert(argc == 4);
 	argv += 3;
 
 #ifndef WIN32