[Bug middle-end/71296] missing warning on strcat appending to a non-string

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71296
Bug 71296 depends on bug 71303, which changed state.

Bug 71303 Summary: missing strlen optimization for strings initialized via a 
braced-init-list
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71303

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |DUPLICATE