Merge pull request #19770 from compnerd/bionic-malloc

stdlib: correct declaration for `malloc_usable_size` on android

Author: compnerd

stdlib/public/SwiftShims/LibcShims.h

@@ -99,7 +99,13 @@ static inline __swift_size_t _swift_stdlib_malloc_size(const void *ptr) {
 #elif defined(__linux__) || defined(__CYGWIN__) || defined(__ANDROID__) \
    || defined(__HAIKU__) || defined(__FreeBSD__)
 static inline __swift_size_t _swift_stdlib_malloc_size(const void *ptr) {
+#if defined(__ANDROID__)
+#if __ANDROID_API__ >= 17
+  extern __swift_size_t malloc_usable_size(const void *ptr);
+#endif
+#else
   extern __swift_size_t malloc_usable_size(void *ptr);
+#endif
   return malloc_usable_size(CONST_CAST(void *, ptr));
 }
 #elif defined(_WIN32)