Fixed IfStmt

src/main/java/chocopy/pa3/CodeGenImpl.java

@@ -589,11 +589,11 @@ public class CodeGenImpl extends CodeGenBase
             Register result = node.condition.dispatch(this);
 
             Label ln = generateLocalLabel();
-            backend.emitBEQZ(result, ln,"Jump to end of loop");
+            elseBlock.push(generateLocalLabel());
+            backend.emitBEQZ(result, elseBlock.peek(),"Jump to end of loop");
             for(Stmt s:node.thenBody)
                 s.dispatch(this);
             backend.emitJ(ln, "Jump to end of if statement");
-            elseBlock.push(generateLocalLabel());
             backend.emitLocalLabel(elseBlock.peek(), "Else part of if statement");
             for(Stmt s:node.elseBody)
                 s.dispatch(this);