Revert r259143, it broke check-lld on Windows (see PR26388).

llvm-svn: 259395
diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp
index cbf422d..d9f98e9 100644
--- a/lld/ELF/LinkerScript.cpp
+++ b/lld/ELF/LinkerScript.cpp
@@ -178,7 +178,7 @@
     else
       Driver->addFile(Saver.save(Config->Sysroot + "/" + S.substr(1)));
   } else if (S.startswith("-l")) {
-    Driver->addLibrary(S.substr(2));
+    Driver->addFile(searchLibrary(S.substr(2)));
   } else if (sys::fs::exists(S)) {
     Driver->addFile(S);
   } else {