[Dominators] Remove an extra semicolon and add a missing include.

llvm-svn: 308065

llvm/unittests/IR/DominatorTreeTest.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include <random>
 #include "llvm/Analysis/PostDominators.h"
 #include "llvm/AsmParser/Parser.h"
 #include "llvm/IR/Constants.h"
@@ -332,7 +333,7 @@ const auto Delete = CFGBuilder::ActionKind::Delete;
 bool CompUpdates(const CFGBuilder::Update &A, const CFGBuilder::Update &B) {
   return std::tie(A.Action, A.Edge.From, A.Edge.To) <
          std::tie(B.Action, B.Edge.From, B.Edge.To);
-};
+}
 }  // namespace
 
 TEST(DominatorTree, InsertReachable) {