Function must return a value

Currently compilation will fail with some compilers when LevelDB and LMDB are disabled.
Very similar to a recently fixed issue.

diff --git a/src/caffe/util/db.cpp b/src/caffe/util/db.cpp
index d0a2b0b..7f22509 100644 (file)
--- a/src/caffe/util/db.cpp
+++ b/src/caffe/util/db.cpp
@@ -18,6 +18,7 @@ DB* GetDB(DataParameter::DB backend) {
 #endif  // USE_LMDB
   default:
     LOG(FATAL) << "Unknown database backend";
+    return NULL;
   }
 }