[libvirt] [PATCH] nwfilter: variable 'obj' must be initialized inside nwfilterBindingCreateXML().

[Julio Faracco]

The function nwfilterBindingCreateXML() is failing to compile due to a
conditional branch which leads to a undefined 'obj' variable. So 'obj'
must have a initial value to avoid compilation errors. See the problem:

  CC       nwfilter/libvirt_driver_nwfilter_impl_la-nwfilter_driver.lo
nwfilter/nwfilter_driver.c:752:9: error: variable 'obj' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
    if (virNWFilterBindingCreateXMLEnsureACL(conn, def) < 0)
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nwfilter/nwfilter_driver.c:779:10: note: uninitialized use occurs here
    if (!obj)
         ^~~
nwfilter/nwfilter_driver.c:752:5: note: remove the 'if' if its condition is always false
    if (virNWFilterBindingCreateXMLEnsureACL(conn, def) < 0)
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nwfilter/nwfilter_driver.c:742:33: note: initialize the variable 'obj' to silence this warning
    virNWFilterBindingObjPtr obj;
                                ^
                                 = NULL

This commit initialized 'obj' with NULL to fix the error properly.

Signed-off-by: Julio Faracco <jcfaracco at gmail.com>
---
 src/nwfilter/nwfilter_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nwfilter/nwfilter_driver.c b/src/nwfilter/nwfilter_driver.c
index d385b46f5f..ed34586105 100644
--- a/src/nwfilter/nwfilter_driver.c
+++ b/src/nwfilter/nwfilter_driver.c
@@ -739,8 +739,8 @@ nwfilterBindingCreateXML(virConnectPtr conn,
                          const char *xml,
                          unsigned int flags)
 {
-    virNWFilterBindingObjPtr obj;
     virNWFilterBindingDefPtr def;
+    virNWFilterBindingObjPtr obj = NULL;
     virNWFilterBindingPtr ret = NULL;
 
     virCheckFlags(0, NULL);
-- 
2.17.1