LockFile: log exception if creation of lock file failed

Change-Id: I4de75d12ec9e61193494916307289378cdb6220e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties

@@ -302,8 +302,9 @@ expectedLessThanGot=expected less than ''{0}'', got ''{1}''
 expectedPktLineWithService=expected pkt-line with ''# service=-'', got ''{0}''
 expectedReceivedContentType=expected Content-Type {0}; received Content-Type {1}
 expectedReportForRefNotReceived={0}: expected report for ref {1} not received
-failedAtomicFileCreation=Atomic file creation failed, number of hard links to file {0} was not 2 but {1}"
-failedToDetermineFilterDefinition=An exception occured while determining filter definitions
+failedAtomicFileCreation=Atomic file creation failed, number of hard links to file {0} was not 2 but {1}
+failedCreateLockFile=Creating lock file {} failed
+failedToDetermineFilterDefinition=An exception occurred while determining filter definitions
 failedUpdatingRefs=failed updating refs
 failureDueToOneOfTheFollowing=Failure due to one of the following:
 failureUpdatingFETCH_HEAD=Failure updating FETCH_HEAD: {0}

org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java

@@ -364,6 +364,7 @@ public class JGitText extends TranslationBundle {
 	/***/ public String expectedReceivedContentType;
 	/***/ public String expectedReportForRefNotReceived;
 	/***/ public String failedAtomicFileCreation;
+	/***/ public String failedCreateLockFile;
 	/***/ public String failedToDetermineFilterDefinition;
 	/***/ public String failedUpdatingRefs;
 	/***/ public String failureDueToOneOfTheFollowing;

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/LockFile.java

@@ -165,7 +165,12 @@ public class LockFile {
 	 */
 	public boolean lock() throws IOException {
 		FileUtils.mkdirs(lck.getParentFile(), true);
-		token = FS.DETECTED.createNewFileAtomic(lck);
+		try {
+			token = FS.DETECTED.createNewFileAtomic(lck);
+		} catch (IOException e) {
+			LOG.error(JGitText.get().failedCreateLockFile, lck, e);
+			throw e;
+		}
 		if (token.isCreated()) {
 			haveLck = true;
 			try {