From 05be0289256ba4bd1cce6039b7aae22caa4fc240 Mon Sep 17 00:00:00 2001
From: "Richard A. Kirian" <rkirian@asu.edu>
Date: Fri, 2 Dec 2011 09:49:47 -0800
Subject: Properly fix seg fault in powder_plot.c

(Correction to commit 7543dfc55966d)
---
 libcrystfel/src/stream.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'libcrystfel/src/stream.c')

diff --git a/libcrystfel/src/stream.c b/libcrystfel/src/stream.c
index a7cdc2d9..ce948109 100644
--- a/libcrystfel/src/stream.c
+++ b/libcrystfel/src/stream.c
@@ -472,6 +472,9 @@ int is_stream(const char *filename) {
 	char line[1024];
 	char *rval = NULL;
 	fh = fopen(filename, "r");
+	if ( fh == NULL ) {
+		return -1;
+	}
 	rval = fgets(line, 1023, fh);
 	fclose(fh);
 	if ( rval == NULL ) {
@@ -483,5 +486,4 @@ int is_stream(const char *filename) {
 	else {
 		return 0;
 	}
-	return -1;
 }
-- 
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