Camera: fix NDK logspam

Duration keys may be missing if the device doesn't support
corresponding capture feature.

Test: build (log only change)
Bug: 150900659

Merged-In: I83e122ff08bc581ddd4bb7e304f152f612817875
Change-Id: I83e122ff08bc581ddd4bb7e304f152f612817875
diff --git a/camera/ndk/impl/ACameraMetadata.cpp b/camera/ndk/impl/ACameraMetadata.cpp
index 1bbb9c2..446ca4f 100644
--- a/camera/ndk/impl/ACameraMetadata.cpp
+++ b/camera/ndk/impl/ACameraMetadata.cpp
@@ -139,12 +139,20 @@
     const int STREAM_WIDTH_OFFSET = 1;
     const int STREAM_HEIGHT_OFFSET = 2;
     const int STREAM_DURATION_OFFSET = 3;
+
     camera_metadata_entry entry = mData->find(tag);
-    if (entry.count == 0 || entry.count % 4 || entry.type != TYPE_INT64) {
+
+    if (entry.count == 0) {
+        // Duration keys can be missing when corresponding capture feature is not supported
+        return;
+    }
+
+    if (entry.count % 4 || entry.type != TYPE_INT64) {
         ALOGE("%s: malformed duration key %d! count %zu, type %d",
                 __FUNCTION__, tag, entry.count, entry.type);
         return;
     }
+
     Vector<int64_t> filteredDurations;
     filteredDurations.setCapacity(entry.count * 2);