Prevent NoWorkTreeException in GitProjectData

Don't try to get the working directory of a bare repository.

Bug: 517056
Change-Id: I1f84142e1ea2aae1c2ae7ef062d7201afa382a2f
Signed-off-by: Thomas Wolf <[email protected]>

Author: Thomas Wolf

org.eclipse.egit.core/src/org/eclipse/egit/core/project/GitProjectData.java

@@ -338,7 +338,7 @@ public boolean visit(IResourceDelta delta)
 					try {
 						Repository r = Activator.getDefault()
 								.getRepositoryCache().lookupRepository(git);
-						if (m != null && r != null
+						if (m != null && r != null && !r.isBare()
 								&& gitCandidate.equals(r.getWorkTree())) {
 							if (data.map(m)) {
 								data.mappings.put(m.getContainerPath(), m);