Update MethodWriter.java

- update previousFrameOffset for Frame Type F_NEW, too.

asm/src/main/java/org/objectweb/asm/MethodWriter.java

@@ -774,6 +774,7 @@ final class MethodWriter extends MethodVisitor {
         currentFrame[frameIndex++] = Frame.getAbstractTypeFromApiFormat(symbolTable, stack[i]);
       }
       visitFrameEnd();
+      previousFrameOffset = code.length;
     } else {
       if (symbolTable.getMajorVersion() < Opcodes.V1_6) {
         throw new IllegalArgumentException("Class versions V1_5 or less must use F_NEW frames.");