Bug 516771 - The toString of class BundleModel always returns 'Unknown
Bundle Model'

Change-Id: I86655a81ecab6cb373ea610a8e4621f138c1583e
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
diff --git a/ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/bundle/BundleModel.java b/ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/bundle/BundleModel.java
index e1e070b..2b38b9b 100644
--- a/ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/bundle/BundleModel.java
+++ b/ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/bundle/BundleModel.java
@@ -133,11 +133,12 @@
 	@Override
 	public String toString() {
 		if (fBundle != null) {
-			StringBuffer buf = new StringBuffer();
+			StringBuilder buf = new StringBuilder();
 			buf.append(fBundle.getHeader(Constants.BUNDLE_SYMBOLICNAME));
 			buf.append(" ("); //$NON-NLS-1$
 			buf.append(fBundle.getHeader(Constants.BUNDLE_VERSION));
 			buf.append(')');
+			return buf.toString();
 		}
 		return "Unknown bundle model"; //$NON-NLS-1$
 	}