decompiler: major line numbers fixes

testData/results/TestClassCast.dec

@@ -5,11 +5,30 @@ import java.util.List;
 
 public class TestClassCast {
    public void test(List var1) {
-      Object var2 = var1;
-      if(var1 != null) {
-         ((List)(var2 = new ArrayList(var1))).add("23");
+      Object var2 = var1;// 22
+      if(var1 != null) {// 23
+         ((List)(var2 = new ArrayList(var1))).add("23");// 24
       }
 
-      System.out.println(((List)var2).size());
+      System.out.println(((List)var2).size());// 26
    }
 }
+
+class 'pkg/TestClassCast' {
+   method 'test (Ljava/util/List;)V' {
+      1      7
+      3      8
+      f      9
+      10      9
+      12      9
+      18      12
+      1c      12
+      21      12
+   }
+}
+
+Lines mapping:
+22 <-> 8
+23 <-> 9
+24 <-> 10
+26 <-> 13