[ELF] Remove a superfluous semicolon, fixing warnings. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@345116 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/ELF/Writer.cpp b/ELF/Writer.cpp
index 13aa337..60f5ff9 100644
--- a/ELF/Writer.cpp
+++ b/ELF/Writer.cpp
@@ -180,7 +180,7 @@
 static Defined *addAbsolute(StringRef Name) {
   return cast<Defined>(Symtab->addDefined(Name, STV_HIDDEN, STT_NOTYPE, 0, 0,
                                           STB_GLOBAL, nullptr, nullptr));
-};
+}
 
 // The linker is expected to define some symbols depending on
 // the linking result. This function defines such symbols.