[SYCL][ESIMD] Move RAII deleter init after buffer allocation. (#17706)

The buffer seems to be allocated in the call to
`NameNode->print(NameBuf)`, so we need to move the RAII deleter after
that call, otherwise the buffer keeps leaking because when the RAII
deleter is created, there's no buffer yet.

Author: maarquitos14

llvm/lib/SYCLLowerIR/ESIMD/ESIMDVerifier.cpp

@@ -162,8 +162,8 @@ class ESIMDVerifierImpl {
             continue;
 
           id::OutputBuffer NameBuf;
-          BuffDeleter NameBufDeleter(NameBuf.getBuffer());
           NameNode->print(NameBuf);
+          BuffDeleter NameBufDeleter(NameBuf.getBuffer());
           StringRef Name(NameBuf.getBuffer(), NameBuf.getCurrentPosition());
 
           // We are interested in functions defined in SYCL namespace, but