Implemented else blocks

src/build/ast/EachInstruction.go

@@ -39,6 +39,18 @@ func EachInstruction(body token.List, call func(token.List) error) error {
 
 		case token.BlockEnd:
 			blockLevel--
+
+			if groupLevel > 0 || blockLevel > 0 {
+				continue
+			}
+
+			err := call(body[start : i+1])
+
+			if err != nil {
+				return err
+			}
+
+			start = i + 1
 		}
 	}