ExternalCameraHAL: Prevent memory leak when manipulating native_handle

native_handle objects created by makeFromAidl need to be deleted
with native_handle_delete. Not doing so leads to a memory leak
every time makeFromAidl is called.

This CL ensures that native_handle_delete is called on the
return value of makeFromAidl wherever it is used.

Bug: 305638723
Test: n/a. No functional change.
Change-Id: Ia99ba6e3abbdf7dec75383450a60c944b92a9c74
diff --git a/camera/device/default/ExternalCameraOfflineSession.cpp b/camera/device/default/ExternalCameraOfflineSession.cpp
index 536fa47..2d4e2e0 100644
--- a/camera/device/default/ExternalCameraOfflineSession.cpp
+++ b/camera/device/default/ExternalCameraOfflineSession.cpp
@@ -111,6 +111,7 @@
                 native_handle_t* handle = native_handle_create(/*numFds*/ 1, /*numInts*/ 0);
                 handle->data[0] = req->buffers[i].acquireFence;
                 result.outputBuffers[i].releaseFence = android::dupToAidl(handle);
+                native_handle_delete(handle);
             }
             notifyError(req->frameNumber, req->buffers[i].streamId, ErrorCode::ERROR_BUFFER);
         } else {
@@ -120,6 +121,7 @@
                 native_handle_t* handle = native_handle_create(/*numFds*/ 1, /*numInts*/ 0);
                 handle->data[0] = req->buffers[i].acquireFence;
                 outputBuffer.releaseFence = android::dupToAidl(handle);
+                native_handle_delete(handle);
             }
         }
     }
@@ -248,6 +250,7 @@
             native_handle_t* handle = native_handle_create(/*numFds*/ 1, /*numInts*/ 0);
             handle->data[0] = req->buffers[i].acquireFence;
             outputBuffer.releaseFence = dupToAidl(handle);
+            native_handle_delete(handle);
         }
     }