Follow up the RString change [ci skip]

Since 46b66eb9e8, already `ary` has
been enclosed in `embed`.

misc/lldb_cruby.py

@@ -190,9 +190,8 @@ def string2cstr(rstring):
         cptr = int(rstring.GetValueForExpressionPath(".as.heap.ptr").value, 0)
         clen = int(rstring.GetValueForExpressionPath(".as.heap.len").value, 0)
     else:
-        # cptr = int(rstring.GetValueForExpressionPath(".as.embed.ary").location, 0)
+        cptr = int(rstring.GetValueForExpressionPath(".as.embed.ary").location, 0)
         # clen = int(rstring.GetValueForExpressionPath(".as.embed.len").value, 0)
-        cptr = int(rstring.GetValueForExpressionPath(".as.ary").location, 0)
         clen = (flags & RSTRING_EMBED_LEN_MASK) >> RSTRING_EMBED_LEN_SHIFT
     return cptr, clen