fdopen returns NULL on failure, not a negative integer.

CID 1306863
CID 1306858

Signed-off-by: George Dunlap <george.dun...@citrix.com>
---
Strangely, coverity counted this as two bugs: one for comparing a
pointer with a negative integer, one for the comparison never possibly
being true (thus making the if condition dead code).

CC: Ian Jackson <ian.jack...@citrix.com>
CC: Wei Liu <wei.l...@citrix.com>
---
 tools/xentrace/xenalyze.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/xentrace/xenalyze.c b/tools/xentrace/xenalyze.c
index 123030a..249bebd 100644
--- a/tools/xentrace/xenalyze.c
+++ b/tools/xentrace/xenalyze.c
@@ -9029,7 +9029,7 @@ void progress_init(void) {
         opt.progress = 0;
     }
 
-    if( (G.progress.out = fdopen(G.progress.pipe[1], "w")) < 0 ) {
+    if( (G.progress.out = fdopen(G.progress.pipe[1], "w")) == NULL ) {
         fprintf(stderr, "%s: could not fdopen pipe: %s, disabling progress 
bar\n",
                 __func__, strerror(errno));
         opt.progress = 0;
-- 
2.1.4


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