[clang] [clang][analyzer] Support `fputc` in StreamChecker (PR #71518)

[Balázs Kéri via cfe-commits]

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@@ -111,6 +117,14 @@ void f_use_after_close(void) {
   clearerr(p); // expected-warning {{Stream might be already closed}}
 }
 
+void f_write_after_close(void) {
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balazske wrote:

This is not needed if the other indicated test is added.

https://github.com/llvm/llvm-project/pull/71518