Fix the unit test errors.

llvm/include/llvm/Support/SpecialCaseList.h

@@ -132,9 +132,8 @@ class SpecialCaseList {
   using SectionEntries = StringMap<StringMap<Matcher>>;
 
   struct Section {
-    Section(std::unique_ptr<Matcher> M, StringRef str)
-        : SectionMatcher(std::move(M)), SectionStr(SectionStr) {};
-    Section(StringRef str) : Section(std::make_unique<Matcher>(), str) {};
+    Section(std::unique_ptr<Matcher> M) : SectionMatcher(std::move(M)) {};
+    Section() : Section(std::make_unique<Matcher>()) {};
 
     std::unique_ptr<Matcher> SectionMatcher;
     SectionEntries Entries;

llvm/lib/Support/SpecialCaseList.cpp

@@ -132,8 +132,9 @@ bool SpecialCaseList::createInternal(const MemoryBuffer *MB,
 Expected<SpecialCaseList::Section *>
 SpecialCaseList::addSection(StringRef SectionStr, unsigned LineNo,
                             bool UseGlobs) {
-  Sections.emplace_back(SectionStr);
+  Sections.emplace_back();
   auto &Section = Sections.back();
+  Section.SectionStr = SectionStr;
 
   if (auto Err = Section.SectionMatcher->insert(SectionStr, LineNo, UseGlobs)) {
     return createStringError(errc::invalid_argument,