libxl: only free console reader if it was allocated in main_dmesg

Coverity-ID: 1055304
Signed-off-by: Matthew Daley <mattjd@gmail.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index 81ec66c85f67a63383a3e561f29980bdd051cb3f..642b130864991c740a2ad31ae15ac76b6b1dcf64 100644 (file)
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -5537,7 +5537,8 @@ int main_dmesg(int argc, char **argv)
         printf("%s", line);
 
 finish:
-    libxl_xen_console_read_finish(ctx, cr);
+    if (cr)
+        libxl_xen_console_read_finish(ctx, cr);
     return ret;
 }