Fix missing type annotation in list comprehension body

test/aeso_compiler_tests.erl

@@ -138,6 +138,7 @@ compilable_contracts() ->
      "test",
      "builtin_bug",
      "builtin_map_get_bug",
+     "lc_record_bug",
      "nodeadcode",
      "deadcode",
      "variant_types",

test/contracts/lc_record_bug.aes

@@ -0,0 +1,4 @@
+contract Foo =
+  record r = {x : int}
+  // Crashed in the backend due to missing type annotation on the lc body.
+  entrypoint lc(xs) = [ {x = x} | x <- xs ]