[errorprone] Suppress [Finally] warnings

In these cases we use Throwable#addSuppressed to ensure the exception
thrown in the catch block preceding the finally block throwing another
exception isn't lost.

Change-Id: I96e78a5c15238ab77ac90ca1901850ce19acfcd8

org.eclipse.jgit/src/org/eclipse/jgit/transport/FetchProcess.java

@@ -90,6 +90,7 @@ class FetchProcess {
 				.collect(Collectors.toList());
 	}
 
+	@SuppressWarnings("Finally")
 	void execute(ProgressMonitor monitor, FetchResult result,
 			String initialBranch)
 			throws NotSupportedException, TransportException {

org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkFetchConnection.java

@@ -470,6 +470,7 @@ private boolean alreadyHave(AnyObjectId id) throws TransportException {
 		}
 	}
 
+	@SuppressWarnings("Finally")
 	private boolean downloadPackedObject(final ProgressMonitor monitor,
 			final AnyObjectId id) throws TransportException {
 		// Search for the object in a remote pack whose index we have,