[NFC] Strip trailing whitespace from libc++
diff --git a/libcxx/test/std/strings/c.strings/cwctype.pass.cpp b/libcxx/test/std/strings/c.strings/cwctype.pass.cpp
index 3bcda1a..99027d9 100644
--- a/libcxx/test/std/strings/c.strings/cwctype.pass.cpp
+++ b/libcxx/test/std/strings/c.strings/cwctype.pass.cpp
@@ -107,7 +107,7 @@
     ASSERT_SAME_TYPE(int, decltype(std::iswxdigit(w)));
 
     ASSERT_SAME_TYPE(int, decltype(std::iswctype(w, std::wctype_t())));
-    
+
     ASSERT_SAME_TYPE(std::wctype_t,  decltype(std::wctype("")));
     ASSERT_SAME_TYPE(std::wint_t,    decltype(std::towlower(w)));
     ASSERT_SAME_TYPE(std::wint_t,    decltype(std::towupper(w)));
diff --git a/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/length.pass.cpp b/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/length.pass.cpp
index 419366c..a0cb0f6 100644
--- a/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/length.pass.cpp
+++ b/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/length.pass.cpp
@@ -37,7 +37,7 @@
     return 0;
 }
 #else
-int main(int, char**) { 
+int main(int, char**) {
   return 0;
 }
 #endif
diff --git a/libcxx/test/std/strings/string.view/string_view.literals/literal.pass.cpp b/libcxx/test/std/strings/string.view/string_view.literals/literal.pass.cpp
index a8a1dff..fc795e7 100644
--- a/libcxx/test/std/strings/string.view/string_view.literals/literal.pass.cpp
+++ b/libcxx/test/std/strings/string.view/string_view.literals/literal.pass.cpp
@@ -39,7 +39,7 @@
     std::u16string_view ufoo;
     std::u32string_view Ufoo;
 
-    
+
     foo  =    ""sv;     assert(  foo.size() == 0);
     u8foo = u8""sv;     assert(u8foo.size() == 0);
     Lfoo  =  L""sv;     assert( Lfoo.size() == 0);
diff --git a/libcxx/test/std/strings/strings.erasure/erase.pass.cpp b/libcxx/test/std/strings/strings.erasure/erase.pass.cpp
index 5013300..26d6b86 100644
--- a/libcxx/test/std/strings/strings.erasure/erase.pass.cpp
+++ b/libcxx/test/std/strings/strings.erasure/erase.pass.cpp
@@ -11,7 +11,7 @@
 
 // template <class charT, class traits, class Allocator, class U>
 //   void erase(basic_string<charT, traits, Allocator>& c, const U& value);
-  
+
 
 #include <string>
 #include <optional>
diff --git a/libcxx/test/std/strings/strings.erasure/erase_if.pass.cpp b/libcxx/test/std/strings/strings.erasure/erase_if.pass.cpp
index 5f2fb01..30a58c0 100644
--- a/libcxx/test/std/strings/strings.erasure/erase_if.pass.cpp
+++ b/libcxx/test/std/strings/strings.erasure/erase_if.pass.cpp
@@ -10,7 +10,7 @@
 // <string>
 
 // template <class charT, class traits, class Allocator, class Predicate>
-//   void erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred);  
+//   void erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred);
 
 #include <string>
 
@@ -37,7 +37,7 @@
     auto isD = [](auto ch) { return ch == 'd';};
     auto True  = [](auto) { return true; };
     auto False = [](auto) { return false; };
-    
+
     test0(S(""), isA, S(""));
 
     test0(S("a"), isA, S(""));