[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT

sdk/lib/ucrt/heap/malloc.cpp

@@ -0,0 +1,27 @@
+//
+// malloc.cpp
+//
+//      Copyright (c) Microsoft Corporation. All rights reserved.
+//
+// Implementation of malloc().
+//
+#include <corecrt_internal.h>
+#include <malloc.h>
+
+
+
+// Allocates a block of memory of size 'size' bytes in the heap.  If allocation
+// fails, nullptr is returned.
+//
+// This function supports patching and therefore must be marked noinline.
+// Both _malloc_dbg and _malloc_base must also be marked noinline
+// to prevent identical COMDAT folding from substituting calls to malloc
+// with either other function or vice versa.
+extern "C" _CRT_HYBRIDPATCHABLE __declspec(noinline) _CRTRESTRICT void* __cdecl malloc(size_t const size)
+{
+    #ifdef _DEBUG
+    return _malloc_dbg(size, _NORMAL_BLOCK, nullptr, 0);
+    #else
+    return _malloc_base(size);
+    #endif
+}