Convert getSymbolSection to return an ErrorOr.

This function can actually fail since the symbol contains an index to the
section and that can be invalid.

llvm-svn: 244375

llvm/lib/Object/Object.cpp

@@ -98,8 +98,10 @@ void LLVMMoveToNextSection(LLVMSectionIteratorRef SI) {
 
 void LLVMMoveToContainingSection(LLVMSectionIteratorRef Sect,
                                  LLVMSymbolIteratorRef Sym) {
-  if (std::error_code ec = (*unwrap(Sym))->getSection(*unwrap(Sect)))
+  ErrorOr<section_iterator> SecOrErr = (*unwrap(Sym))->getSection();
+  if (std::error_code ec = SecOrErr.getError())
     report_fatal_error(ec.message());
+  *unwrap(Sect) = *SecOrErr;
 }
 
 // ObjectFile Symbol iterators