Add default for missing working dir

Change-Id: I20e12c8a04ed67c94428b3139b699c9c5a967106
Signed-off-by: Dirk Fauth <Dirk.Fauth@de.bosch.com>

framework/plugins/org.eclipse.app4mc.transformation/src/org/eclipse/app4mc/transformation/TransformationProcessor.java

diff --git a/framework/plugins/org.eclipse.app4mc.transformation/src/org/eclipse/app4mc/transformation/TransformationProcessor.java b/framework/plugins/org.eclipse.app4mc.transformation/src/org/eclipse/app4mc/transformation/TransformationProcessor.java
index 4da011a..a43328d 100644
--- a/framework/plugins/org.eclipse.app4mc.transformation/src/org/eclipse/app4mc/transformation/TransformationProcessor.java
+++ b/framework/plugins/org.eclipse.app4mc.transformation/src/org/eclipse/app4mc/transformation/TransformationProcessor.java
@@ -166,6 +166,11 @@
 			}
 		}
 
+		if (workDir == null) {
+			// if no working directory is provided as argument and not in the properties, use the parent of the properties file
+			workDir = propertiesFile.getParentFile();
+		}
+		
 		return harmonizeInputParameter(properties, workDir);
 	}