itss: Replace malloc() with HeapAlloc()

[Andrew Talbot]

Changelog:
    itss: Replace malloc() with HeapAlloc().

diff --git a/dlls/itss/lzx.c b/dlls/itss/lzx.c
index b5fdfc7..0ffeeb6 100644
--- a/dlls/itss/lzx.c
+++ b/dlls/itss/lzx.c
@@ -36,15 +36,17 @@
  ***************************************************************************/
 
 #include "lzx.h"
+#include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+#include "windef.h"
+#include "winbase.h"
+
 /* sized types */
 typedef unsigned char  UBYTE; /* 8 bits exactly    */
 typedef unsigned short UWORD; /* 16 bits (or more) */
-typedef unsigned int   ULONG; /* 32 bits (or more) */
-typedef   signed int    LONG; /* 32 bits (or more) */
 
 /* some constants defined by the LZX specification */
 #define LZX_MIN_MATCH                (2)
@@ -178,8 +180,8 @@ struct LZXstate *LZXinit(int window)
     if (window < 15 || window > 21) return NULL;
 
     /* allocate state and associated window */
-    pState = malloc(sizeof(struct LZXstate));
-    if (!(pState->window = malloc(wndsize)))
+    pState = HeapAlloc(GetProcessHeap(), 0, sizeof(struct LZXstate));
+    if (!(pState->window = HeapAlloc(GetProcessHeap(), 0, wndsize)))
     {
         free(pState);
         return NULL;