Abbreviated{Long}ObjectId: Make operator precedence explicit

Change-Id: Iafd616d3fdc81ac3072f776061548be195270d85
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/lib/AbbreviatedLongObjectId.java

@@ -170,7 +170,7 @@ public final class AbbreviatedLongObjectId implements Serializable {
 			r |= RawParseUtils.parseHexInt4(bs[p++]);
 			n++;
 		}
-		return r << (16 - n) * 4;
+		return r << ((16 - n) * 4);
 	}
 
 	static long mask(int nibbles, long word, long v) {

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

@@ -162,7 +162,7 @@ public final class AbbreviatedObjectId implements Serializable {
 			r |= RawParseUtils.parseHexInt4(bs[p++]);
 			n++;
 		}
-		return r << (8 - n) * 4;
+		return r << ((8 - n) * 4);
 	}
 
 	static int mask(int nibbles, int word, int v) {