Added (correct) prototype for HeapWalk.

include/winbase.h

@@ -1352,6 +1352,7 @@ LPVOID      WINAPI HeapReAlloc(HANDLE,DWORD,LPVOID,DWORD);
 DWORD       WINAPI HeapSize(HANDLE,DWORD,LPVOID);
 BOOL      WINAPI HeapUnlock(HANDLE);
 BOOL      WINAPI HeapValidate(HANDLE,DWORD,LPCVOID);
+BOOL        WINAPI HeapWalk(HANDLE,LPPROCESS_HEAP_ENTRY);
 BOOL        WINAPI InitializeSid(PSID,PSID_IDENTIFIER_AUTHORITY,BYTE);
 BOOL        WINAPI IsValidSecurityDescriptor(PSECURITY_DESCRIPTOR);
 BOOL        WINAPI IsValidSid(PSID);

memory/heap.c

@@ -1423,7 +1423,7 @@ BOOL WINAPI HeapValidate(
  */
 BOOL WINAPI HeapWalk(
               HANDLE heap,               /* [in]  Handle to heap to enumerate */
-              LPPROCESS_HEAP_ENTRY *entry  /* [out] Pointer to structure of enumeration info */
+              LPPROCESS_HEAP_ENTRY entry  /* [out] Pointer to structure of enumeration info */
 ) {
     FIXME("(%08x): stub.\n", heap );
     return FALSE;