[clang-format] No space after placement new in member initializer list

[aeubanks]

#include <new>
struct A {
  void *a;
  A(void *p) : a(new(p) int) {}
};

clang-format doesn't want to add a space after the new even though I believe that's the standard practice.

[llvmbot]

@llvm/issue-subscribers-clang-format

[zmodem]

Bisection points to:

commit dbc4d281bd6954362ccfc0747893ceaae842671b
Author: Luis Penagos <[email protected]>
Date:   Thu Feb 24 09:48:24 2022 +0100

    [clang-format] Do not insert space after new/delete keywords in C function declarations
    
    Fixes https://github.com/llvm/llvm-project/issues/46915.
    
    Reviewed By: curdeius, HazardyKnusperkeks
    
    Differential Revision: https://reviews.llvm.org/D120374

[nico]

(clicky: dbc4d28, https://reviews.llvm.org/D120374, #46915)