Suppress some warnings in the tests that snuck in. That 'tmpnam' is deprecated doesn't change the fact that we have to test it.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@247704 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/input.output/file.streams/c.files/cstdio.pass.cpp

@@ -80,6 +80,7 @@
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wformat-zero-length"
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
 
 int main()
 {

test/std/language.support/support.types/nullptr_t.pass.cpp

@@ -54,7 +54,7 @@ void test_comparisons()
 
 #if defined(__clang__)
 #pragma clang diagnostic push
-#pragma diagnostic ignored "-Wnull-conversion"
+#pragma clang diagnostic ignored "-Wnull-conversion"
 #endif
 void test_nullptr_conversions() {
     {