Silence resource leak warnings where caller is responsible to close

Change-Id: I63a74651689c10426d5f150ab2e027c6b63cab95
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/src/org/eclipse/jgit/lib/BaseRepositoryBuilder.java

@@ -565,14 +565,16 @@ public class BaseRepositoryBuilder<B extends BaseRepositoryBuilder, R extends Re
 	 * based on other options. If insufficient information is available, an
 	 * exception is thrown to the caller.
 	 *
-	 * @return a repository matching this configuration.
+	 * @return a repository matching this configuration. The caller is
+	 *         responsible to close the repository instance when it is no longer
+	 *         needed.
 	 * @throws IllegalArgumentException
 	 *             insufficient parameters were set.
 	 * @throws IOException
 	 *             the repository could not be accessed to configure the rest of
 	 *             the builder's parameters.
 	 */
-	@SuppressWarnings("unchecked")
+	@SuppressWarnings({ "unchecked", "resource" })
 	public R build() throws IOException {
 		R repo = (R) new FileRepository(setup());
 		if (isMustExist() && !repo.getObjectDatabase().exists())

org.eclipse.jgit/src/org/eclipse/jgit/lib/RepositoryCache.java

@@ -159,6 +159,7 @@ public class RepositoryCache {
 			openLocks[i] = new Lock();
 	}
 
+	@SuppressWarnings("resource")
 	private Repository openRepository(final Key location,
 			final boolean mustExist) throws IOException {
 		Reference<Repository> ref = cacheMap.get(location);