PCI: aerdrv: fix uninitialized variable warning

quiet the warning about use of uninitialized e_src in
aer_isr()  e_src is initialized by get_e_source()

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

drivers/pci/pcie/aer/aerdrv_core.c

@@ -754,7 +754,7 @@ void aer_isr(struct work_struct *work)
 {
 	struct aer_rpc *rpc = container_of(work, struct aer_rpc, dpc_handler);
 	struct pcie_device *p_device = rpc->rpd;
-	struct aer_err_source e_src;
+	struct aer_err_source uninitialized_var(e_src);
 
 	mutex_lock(&rpc->rpc_mutex);
 	while (get_e_source(rpc, &e_src))