[Qemu-trivial] [PATCH v1 1/1] hexdump: Add null guard on output file.

[Peter Crosthwaite]

To avoid callsites with optional output having to NULL guard.

Signed-off-by: Peter Crosthwaite <address@hidden>
---
Noting in-tree is affected by this yet, but I though I'd get this
out of the way straight-up rather than elongate other series.

 util/hexdump.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/util/hexdump.c b/util/hexdump.c
index 969b340..b607236 100644
--- a/util/hexdump.c
+++ b/util/hexdump.c
@@ -19,6 +19,9 @@ void qemu_hexdump(const char *buf, FILE *fp, const char 
*prefix, size_t size)
 {
     unsigned int b;
 
+    if (!fp) {
+        return;
+    }
     for (b = 0; b < size; b++) {
         if ((b % 16) == 0) {
             fprintf(fp, "%s: %04x:", prefix, b);
-- 
2.0.1.1.gfbfc394