getHeadCommit() returns null if branch does not exists

Author: host6

src/main/java/org/scm4j/vcs/svn/SVNVCS.java

@@ -584,6 +584,9 @@ public VCSCommit getHeadCommit(String branchName) {
 			SVNLogEntry headEntry = getDirHeadLogEntry(getBranchName(branchName));
 			return new VCSCommit(Long.toString(headEntry.getRevision()), headEntry.getMessage(), headEntry.getAuthor());
 		} catch (SVNException e) {
+			if (e.getErrorMessage().getErrorCode().getCode() == SVN_FILE_NOT_FOUND_ERROR_CODE) {
+				return null;
+			}
 			throw new EVCSException(e);
 		} catch (Exception e) {
 			throw new RuntimeException(e);