irscan now also works correctly in addition to not crashing :-)

git-svn-id: svn://svn.berlios.de/openocd/trunk@1770 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/jtag/jtag.c

@@ -2889,7 +2889,7 @@ static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, c
 		}
 	}
 
-	int num_fields= num_fields;
+	int num_fields = argc / 2;
 
 	fields = malloc(sizeof(scan_field_t) * num_fields);