Fix comparison of nanoseconds

NB.decodeInt32(info, base + 4) already returns nanoseconds.
Therefore it must not be divided by 1000000.

Change-Id: Ie8f5c4a03f984d98935dccedc2b1ba4457094899
Signed-off-by: Stefan Lay <stefan.lay@sap.com>

org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheEntry.java

@@ -292,7 +292,7 @@ public class DirCacheEntry {
 		if (smudge_s < mtime)
 			return true;
 		if (smudge_s == mtime)
-			return smudge_ns <= NB.decodeInt32(info, base + 4) / 1000000;
+			return smudge_ns <= NB.decodeInt32(info, base + 4);
 		return false;
 	}