build: fix "missing initializer" error in qemu_process.c

Found when attempting to build on Fedora 17 alpha with:

   ./autogen.sh --system --enable-compile-warnings=error

(this same build command works without problem on Fedora 16). Since
the consumer of the qemuProcessReconnectData doesn't assume that the
other fields of the struct are initialized (although it uses them
internally), the simpler solution is to just switch to C99-style
struct initialization (which doesn't require specification of all
fields).

src/qemu/qemu_process.c

@@ -3255,7 +3255,7 @@ error:
 void
 qemuProcessReconnectAll(virConnectPtr conn, struct qemud_driver *driver)
 {
-    struct qemuProcessReconnectData data = {conn, driver};
+    struct qemuProcessReconnectData data = {.conn = conn, .driver = driver};
     virHashForEach(driver->domains.objs, qemuProcessReconnectHelper, &data);
 }