[PATCH] [DOCBOOK] fix segfault in docproc.c

[Henne <henne@nachtwindheim.de>]

From: Henrik Kretzschmar <henne@nachtwindheim.de>

Adds a missing exit, if the file that should be parsed couldn't be opened.
Without it crashes with a segfault, cause the filedescriptor is accessed even if the file could not be opened.
This error happens on 2.6.18-rc4-mm[12] when executing make xmldocs.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
---

--- linux-2.6.18-rc4/scripts/basic/docproc.c	2006-06-18 03:49:35.000000000 +0200
+++ linux/scripts/basic/docproc.c	2006-08-18 22:19:48.000000000 +0200
@@ -177,6 +177,7 @@
 		{
 			fprintf(stderr, "docproc: ");
 			perror(real_filename);
+			exit(1);
 		}
 		while(fgets(line, MAXLINESZ, fp)) {
 			char *p;