[gnome-bluetooth] lib: Fix freeing uninitialised value

[Bastien Nocera <hadess src gnome org>]

commit 10c4de2e8a04075b11c1c96a77d5aa4ceab9b132
Author: Bastien Nocera <hadess hadess net>
Date:   Tue May 26 12:05:50 2015 +0200

    lib: Fix freeing uninitialised value
    
    modalias could be freed without being initialised if we bailed out
    early.
    
    From coverity:
    gnome-bluetooth-3.14.1/lib/pin.c:81:2: warning: Assigned value is garbage or undefined

 lib/pin.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/lib/pin.c b/lib/pin.c
index 61e87ab..c5b1d9f 100644
--- a/lib/pin.c
+++ b/lib/pin.c
@@ -43,7 +43,7 @@ oui_to_vendor (const char *oui)
        struct udev *udev;
        struct udev_hwdb *hwdb;
        struct udev_list_entry *list, *l;
-       char *modalias;
+       char *modalias = NULL;
        char *vendor = NULL;
 
        if (oui == NULL ||