Only tell the second block about variables declared in first block if

the first block is a InstructionBlock


git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@233 379699f6-c40d-0410-875b-85095c16579e

jode/jode/flow/SequentialBlock.java

@@ -106,11 +106,15 @@ public class SequentialBlock extends StructuredBlock {
         subBlocks[0].used.unionExact(used);
 	subBlocks[0].makeDeclaration(done);
 
+	VariableSet doneFirst;
+	if (subBlocks[0] instanceof InstructionBlock) {
 	    /* Now add the variables used in the first block to the done
 	     * set of the second block, since the first sub block has
 	     * declared them.  */
-	VariableSet doneFirst = (VariableSet) done.clone();
+	    doneFirst = (VariableSet) done.clone();
 	    doneFirst.unionExact(subBlocks[0].used);
+	} else
+	    doneFirst = done;
 	subBlocks[1].makeDeclaration(doneFirst);
     }