3 uninitialized variables in IOMX.cpp

Uninitialized MetadataBufferType pointer in case:
SET_INPUT_SURFACE
STORE_META_DATA_IN_BUFFERS
CREATE_INPUT_SURFACE

Fix: initialize them to kMetadataBufferTypeInvalid

Bug: 26324358
Change-Id: Ib3bcac9bedc98bc65efa39f67cdbffbd90b374c9
diff --git a/media/libmedia/IOMX.cpp b/media/libmedia/IOMX.cpp
index 8f55eb9..07f3697 100644
--- a/media/libmedia/IOMX.cpp
+++ b/media/libmedia/IOMX.cpp
@@ -844,9 +844,13 @@
             OMX_U32 port_index = data.readInt32();
 
             sp<IGraphicBufferProducer> bufferProducer;
-            MetadataBufferType type;
+            MetadataBufferType type = kMetadataBufferTypeInvalid;
             status_t err = createInputSurface(node, port_index, &bufferProducer, &type);
 
+            if ((err != OK) && (type == kMetadataBufferTypeInvalid)) {
+                android_errorWriteLog(0x534e4554, "26324358");
+            }
+
             reply->writeInt32(type);
             reply->writeInt32(err);
 
@@ -886,9 +890,13 @@
             sp<IGraphicBufferConsumer> bufferConsumer =
                     interface_cast<IGraphicBufferConsumer>(data.readStrongBinder());
 
-            MetadataBufferType type;
+            MetadataBufferType type = kMetadataBufferTypeInvalid;
             status_t err = setInputSurface(node, port_index, bufferConsumer, &type);
 
+            if ((err != OK) && (type == kMetadataBufferTypeInvalid)) {
+                android_errorWriteLog(0x534e4554, "26324358");
+            }
+
             reply->writeInt32(type);
             reply->writeInt32(err);
             return NO_ERROR;
@@ -914,8 +922,13 @@
             OMX_U32 port_index = data.readInt32();
             OMX_BOOL enable = (OMX_BOOL)data.readInt32();
 
-            MetadataBufferType type;
+            MetadataBufferType type = kMetadataBufferTypeInvalid;
             status_t err = storeMetaDataInBuffers(node, port_index, enable, &type);
+
+            if ((err != OK) && (type == kMetadataBufferTypeInvalid)) {
+                android_errorWriteLog(0x534e4554, "26324358");
+            }
+
             reply->writeInt32(type);
             reply->writeInt32(err);