DX 50: Fix file descriptor leak on error

Unimportant change, still good style.

cppcheck reported:
[rockbox/firmware/target/hosted/android/dx50/button-dx50.c:92]: (error) Resource leak: fd
[rockbox/firmware/target/hosted/android/dx50/button-dx50.c:98]: (error) Resource leak: fd

Change-Id: Ic1831382219c44e7bef71cb2391646c9910d2369

1 files changed, 2 insertions, 0 deletions

diff --git a/firmware/target/hosted/android/dx50/button-dx50.c b/firmware/target/hosted/android/dx50/button-dx50.c
index 5ab58ce420..250b448491 100644
--- a/firmware/target/hosted/android/dx50/button-dx50.c
+++ b/firmware/target/hosted/android/dx50/button-dx50.c
@@ -89,12 +89,14 @@ static int open_device(const char *device, int print_flags)
     new_ufds = realloc(ufds, sizeof(ufds[0]) * (nfds + 1));
     if(new_ufds == NULL) {
         fprintf(stderr, "out of memory\n");
+        close(fd);
         return -1;
     }
     ufds = new_ufds;
     new_device_names = realloc(device_names, sizeof(device_names[0]) * (nfds + 1));
     if(new_device_names == NULL) {
         fprintf(stderr, "out of memory\n");
+        close(fd);
         return -1;
     }
     device_names = new_device_names;