[llvm] [Flang][runtime] Fix RENAME intrinsic, remove trailing blanks (PR #159123)

[via llvm-commits]

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@@ -525,6 +525,9 @@ RT_API_ATTRS void ShallowCopy(const Descriptor &to, const Descriptor &from,
     bool toIsContiguous, bool fromIsContiguous);
 RT_API_ATTRS void ShallowCopy(const Descriptor &to, const Descriptor &from);
 
+// Determines if a character string is null-terminated.
+RT_API_ATTRS bool IsNullTerminated(char *str, std::size_t length);
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jeanPerier wrote:

Not needed with suggestion.

https://github.com/llvm/llvm-project/pull/159123