[llvm] [MC,ELF] Emit warning if a string constant contains newline char. (PR #98060)

[Fangrui Song via llvm-commits]

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@@ -3125,6 +3130,7 @@ bool AsmParser::parseDirectiveAscii(StringRef IDVal, bool ZeroTerminated) {
     do {
       if (parseEscapedString(Data))
         return true;
+
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MaskRay wrote:

revert unneeded change

https://github.com/llvm/llvm-project/pull/98060