Remove HasError and use ErrorCount instead.

HasError was always true if ErrorCount > 0, so we can use ErrorCount instead.

llvm-svn: 287849
diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp
index 69aebf3..add5b38 100644
--- a/lld/ELF/LinkerScript.cpp
+++ b/lld/ELF/LinkerScript.cpp
@@ -1315,7 +1315,7 @@
 ScriptParser::readInputSectionRules(StringRef FilePattern) {
   auto *Cmd = new InputSectionDescription(FilePattern);
   expect("(");
-  while (!HasError && !consume(")")) {
+  while (!Error && !consume(")")) {
     SortSectionPolicy Outer = readSortKind();
     SortSectionPolicy Inner = SortSectionPolicy::Default;
     std::vector<SectionPattern> V;