[PATCH 1/2] qemu: block: Break out early on invalid storage sources

[Peter Krempa <pkrempa@xxxxxxxxxx>]

Return NULL right away in qemuBlockStorageSourceGetBackendProps when an
invalid storage source is presented so that virJSONValueObjectAdd isn't
called with a NULL argument.

Found by coverity.
---
 src/qemu/qemu_block.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
index e46a455af..600f315fe 100644
--- a/src/qemu/qemu_block.c
+++ b/src/qemu/qemu_block.c
@@ -958,7 +958,7 @@ qemuBlockStorageSourceGetBackendProps(virStorageSourcePtr src)
     case VIR_STORAGE_TYPE_VOLUME:
     case VIR_STORAGE_TYPE_NONE:
     case VIR_STORAGE_TYPE_LAST:
-        break;
+        return NULL;

     case VIR_STORAGE_TYPE_NETWORK:
         switch ((virStorageNetProtocol) src->protocol) {
@@ -1008,7 +1008,7 @@ qemuBlockStorageSourceGetBackendProps(virStorageSourcePtr src)

         case VIR_STORAGE_NET_PROTOCOL_NONE:
         case VIR_STORAGE_NET_PROTOCOL_LAST:
-            break;
+            return NULL;
         }
         break;
     }
-- 
2.14.3

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