GC: Simplify reference equals() method

Signed-off-by: Hector Oswaldo Caballero <hector.caballero@ericsson.com>
Change-Id: I5b2e12e012d5423e9b84c1c66a478960121ea212

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/GC.java

@@ -768,18 +768,15 @@ public class GC {
 	}
 
 	private static boolean equals(Ref r1, Ref r2) {
-		if (r1 == null || r2 == null)
+		if (r1 == null || r2 == null) {
 			return false;
+		}
 		if (r1.isSymbolic()) {
-			if (!r2.isSymbolic())
-				return false;
-			return r1.getTarget().getName().equals(r2.getTarget().getName());
-		} else {
-			if (r2.isSymbolic()) {
-				return false;
-			}
-			return Objects.equals(r1.getObjectId(), r2.getObjectId());
+			return r2.isSymbolic() && r1.getTarget().getName()
+					.equals(r2.getTarget().getName());
 		}
+		return !r2.isSymbolic()
+				&& Objects.equals(r1.getObjectId(), r2.getObjectId());
 	}
 
 	/**