Fix unused variables in tests to placate scan-build. Patch from Steve MacKenzie.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220154 91177308-0d34-0410-b5e6-96231b3b80d8

test/containers/associative/multimap/multimap.modifiers/erase_key.pass.cpp

@@ -71,6 +71,7 @@ int main()
         assert(next(m.begin(), 5)->second == 2);
 
         i = m.erase(3);
+        assert(i == 3);
         assert(m.size() == 3);
         assert(next(m.begin(), 0)->first == 1);
         assert(next(m.begin(), 0)->second == 1);
@@ -135,6 +136,7 @@ int main()
         assert(next(m.begin(), 5)->second == 2);
 
         i = m.erase(3);
+        assert(i == 3);
         assert(m.size() == 3);
         assert(next(m.begin(), 0)->first == 1);
         assert(next(m.begin(), 0)->second == 1);

test/containers/sequences/array/array.data/data.pass.cpp

@@ -30,5 +30,6 @@ int main()
         typedef std::array<T, 0> C;
         C c = {};
         T* p = c.data();
+        (void)p; // to placate scan-build
     }
 }

test/containers/sequences/array/array.data/data_const.pass.cpp

@@ -30,5 +30,6 @@ int main()
         typedef std::array<T, 0> C;
         const C c = {};
         const T* p = c.data();
+        (void)p; // to placate scan-build
     }
 }