[libc] Remove the #include <stdlib.h> header

libc/src/__support/CPP/new.cpp

@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "new.h"
+#include <stdlib.h>
 
 void operator delete(void *mem) noexcept { ::free(mem); }
 

libc/src/__support/CPP/new.h

@@ -14,7 +14,7 @@
 #include "src/__support/macros/properties/os.h"
 
 #include <stddef.h> // For size_t
-#include <stdlib.h>
+#include <stdlib.h> // For malloc, free etc.
 
 // Defining members in the std namespace is not preferred. But, we do it here
 // so that we can use it to define the operator new which takes std::align_val_t

libc/test/src/__support/str_to_float_comparison_test.cpp

@@ -8,6 +8,8 @@
 
 // #include "src/__support/str_float_conv_utils.h"
 
+#include <stdlib.h>
+
 // #include "src/__support/FPUtil/FPBits.h"
 
 #include <cstdint>

libc/test/src/string/strlcat_test.cpp

@@ -1,4 +1,3 @@
-
 //===-- Unittests for strlcat ---------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.