[PATCH] Fix compare at project level, non-root project

[PATCH] Fix compare at project level, non-root project

[Robin Rosenberg]

Compare didn't work at the project level when the project wasn't
the same as the git working directory, i.e. egit itself.

Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
---

 .../core/internal/mapping/GitFileRevision.java     |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/org.spearce.egit.core/src/org/spearce/egit/core/internal/mapping/GitFileRevision.java b/org.spearce.egit.core/src/org/spearce/egit/core/internal/mapping/GitFileRevision.java
index 7b726f7..def142f 100644
--- a/org.spearce.egit.core/src/org/spearce/egit/core/internal/mapping/GitFileRevision.java
+++ b/org.spearce.egit.core/src/org/spearce/egit/core/internal/mapping/GitFileRevision.java
@@ -150,9 +150,14 @@ public class GitFileRevision extends FileRevision {
 			tree = repositoryMapping.getRepository().mapTree(getCommit().getTreeId());
 			String prefix = repositoryMapping.getSubset();
 			if (prefix != null) {
-				prefix = prefix + "/";
-				String name = prefix + resource.getProjectRelativePath().toString();
-				return tree.findMember(name);
+				String relPath = resource.getProjectRelativePath().toString();
+				if (relPath.equals(""))
+					return tree;
+				else {
+					prefix = prefix + "/";
+					String name = prefix + relPath;
+					return tree.findMember(name);
+				}
 			} else
 				return tree;
 		} catch (IOException e) {