Bug 23982 – segfault when printing scope inference failure

```D // REQUIRED_ARGS: -preview=dip1000 @safe: struct B() { this(int* a) { this.a = a; } int* a; } class C() { int* foo2(int* a) { auto b = B!()(a); return b.a; } } void main() { scope int* a; C!() c; c.foo2(a); } ``` Results in a segmentation fault. The expression `this.a = a;` gets put into the `EscapeState.scopeInferFailure` associative array, but by the time it gets read in `printScopeFailure`, the class instance is corrupted: the vtable is 0x000000000000005F. This suggests it gets freed, even while the AA still has a reference to it.

@dkorpel created dlang/dmd pull request #15329 "Fix 23982 - segfault when printing scope inference failure" fixing this issue: - Fix 23982 - segfault when printing scope inference failure https://github.com/dlang/dmd/pull/15329

dlang/dmd pull request #15329 "Fix 23982 - segfault when printing scope inference failure" was merged into stable: - 37ac2fd8790bf8d1ce60f54b596a5ba35225f52c by Dennis Korpel: Fix 23982 - segfault when printing scope inference failure https://github.com/dlang/dmd/pull/15329

dlang/dmd pull request #15373 "merge stable" was merged into master: - 17facd1dc5dca4ad323044c973a1208d790ea9dc by Dennis: Fix 23982 - segfault when printing scope inference failure (#15329) https://github.com/dlang/dmd/pull/15373