Get rid of most instance of 'foo != NULL'

core/src/fxge/win32/fx_win32_print.cpp

Index: core/src/fxge/win32/fx_win32_print.cpp
diff --git a/core/src/fxge/win32/fx_win32_print.cpp b/core/src/fxge/win32/fx_win32_print.cpp
index c829a438b96edd02cb9a7e7a7c17f42dcb39a080..39828b14d8719fa3ab50486b7e47c51653b87517 100644
--- a/core/src/fxge/win32/fx_win32_print.cpp
+++ b/core/src/fxge/win32/fx_win32_print.cpp
@@ -49,7 +49,7 @@ FX_BOOL CGdiPrinterDriver::SetDIBits(const CFX_DIBSource* pSource,
                          pSource->GetHeight(), &clip_rect, 0, alpha_flag,
                          pIccTransform, FXDIB_BLEND_NORMAL);
   }
-  ASSERT(pSource != NULL && !pSource->IsAlphaMask() && pSrcRect != NULL);
+  ASSERT(pSource && !pSource->IsAlphaMask() && pSrcRect);
   ASSERT(blend_type == FXDIB_BLEND_NORMAL);
   if (pSource->HasAlpha()) {
     return FALSE;