vbscript: Don't leak memory in parser.

dlls/vbscript/parse.h

@@ -87,8 +87,11 @@ typedef struct {
 
     statement_t *stats;
     statement_t *stats_tail;
+
+    vbsheap_t heap;
 } parser_ctx_t;
 
 HRESULT parse_script(parser_ctx_t*,const WCHAR*) DECLSPEC_HIDDEN;
+void parser_release(parser_ctx_t*) DECLSPEC_HIDDEN;
 int parser_lex(void*,parser_ctx_t*) DECLSPEC_HIDDEN;
 void *parser_alloc(parser_ctx_t*,size_t) DECLSPEC_HIDDEN;

dlls/vbscript/parser.y

@@ -280,8 +280,7 @@ void *parser_alloc(parser_ctx_t *ctx, size_t size)
 {
     void *ret;
 
-    /* FIXME: leaks! */
-    ret = heap_alloc(size);
+    ret = vbsheap_alloc(&ctx->heap, size);
     if(!ret)
         ctx->hres = E_OUTOFMEMORY;
     return ret;
@@ -292,6 +291,8 @@ HRESULT parse_script(parser_ctx_t *ctx, const WCHAR *code)
     ctx->code = ctx->ptr = code;
     ctx->end = ctx->code + strlenW(ctx->code);
 
+    vbsheap_init(&ctx->heap);
+
     ctx->parse_complete = FALSE;
     ctx->hres = S_OK;
 
@@ -311,3 +312,8 @@ HRESULT parse_script(parser_ctx_t *ctx, const WCHAR *code)
 
     return S_OK;
 }
+
+void parser_release(parser_ctx_t *ctx)
+{
+    vbsheap_free(&ctx->heap);
+}