re-add the call to super_statement in EraseRegions

[arielb1]

The move gathering code is sensitive to type-equality - that is rather
un-robust and I plan to fix it eventually, but that's a more invasive
change. And we want to fix the visitor anyway.

Fixes #42903.

r? @eddyb

[eddyb]

@bors r+

[bors]

📌 Commit dded9e9 has been approved by eddyb

[arielb1]

@bors p=100

This unbreaks the nightly

[bors]

⌛ Testing commit dded9e91ee8d9b73442b64d4c0a2dab06969ac75 with merge c2b9827c84175162f9d65b01857c380b5f87a63d...

[bors]

💔 Test failed - status-travis

[Mark-Simulacrum]

[00:01:37] curl: (56) SSLRead() return error -36

@bors retry

• Tracking issue for spurious network failures on bots #40474

[bors]

⌛ Testing commit dded9e91ee8d9b73442b64d4c0a2dab06969ac75 with merge fbb85a9948e8757a3a57b67358247674d78cf9ba...

[bors]

💔 Test failed - status-travis

[Mark-Simulacrum]

[01:15:43] stderr:
[01:15:43] ------------------------------------------
[01:15:43] error: unexpected token: `0.0`
[01:15:43]   --> <anon>:98:15
[01:15:43]    |
[01:15:43] 98 |     let f = x.0.0;
[01:15:43]    |             --^^^
[01:15:43]    |             | |
[01:15:43]    |             | unexpected token
[01:15:43]    |             help: try parenthesizing the first index `(x.0).0`
[01:15:43] 
[01:15:43] error: unexpected token: `0.0`
[01:15:43]   --> <anon>:99:15
[01:15:43]    |
[01:15:43] 99 |     if c0 { x.0.0 = f; }
[01:15:43]    |             --^^^
[01:15:43]    |             | |
[01:15:43]    |             | unexpected token
[01:15:43]    |             help: try parenthesizing the first index `(x.0).0`
[01:15:43] 
[01:15:43] error: aborting due to previous error(s)
[01:15:43] 
[01:15:43] 
[01:15:43] ------------------------------------------
[01:15:43] 
[01:15:43] thread '[pretty] pretty/dynamic-drop.rs' panicked at 'explicit panic', /checkout/src/tools/compiletest/src/runtest.rs:2479
[01:15:43] note: Run with `RUST_BACKTRACE=1` for a backtrace.
[01:15:43] 
[01:15:43] 
[01:15:43] failures:
[01:15:43]     [pretty] pretty/dynamic-drop.rs
[01:15:43] 
[01:15:43] test result: FAILED. 2669 passed; 1 failed; 36 ignored; 0 measured; 0 filtered out
[01:15:43] 

[arielb1]

@bors r=eddyb

[bors]

📌 Commit 71abfa7 has been approved by eddyb

[bors]

⌛ Testing commit 71abfa7 with merge 6b52a11...

[pnkfelix]

@arielb1 thanks for the quick fix. Super embarrassing oversight on my part. :(

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: eddyb
Pushing 6b52a11 to master...