Fix all the code which has duplicate variable declarations

core/fxge/ge/fx_ge_device.cpp

Index: core/fxge/ge/fx_ge_device.cpp
diff --git a/core/fxge/ge/fx_ge_device.cpp b/core/fxge/ge/fx_ge_device.cpp
index b9bd133e57de7c22fbeaa27ffc9fab5399148326..96e0e55cd1006cf546b52c77e390052812db329b 100644
--- a/core/fxge/ge/fx_ge_device.cpp
+++ b/core/fxge/ge/fx_ge_device.cpp
@@ -388,8 +388,8 @@ FX_BOOL CFX_RenderDevice::SetDIBitsWithBlend(const CFX_DIBSource* pBitmap,
                                     blend_mode, nullptr, FALSE, nullptr)) {
       return FALSE;
     }
-    FX_RECT src_rect(0, 0, bg_pixel_width, bg_pixel_height);
-    return m_pDeviceDriver->SetDIBits(&background, 0, &src_rect, dest_rect.left,
+    FX_RECT rect(0, 0, bg_pixel_width, bg_pixel_height);
+    return m_pDeviceDriver->SetDIBits(&background, 0, &rect, dest_rect.left,
                                       dest_rect.top, FXDIB_BLEND_NORMAL);
   }
   return m_pDeviceDriver->SetDIBits(pBitmap, 0, &src_rect, dest_rect.left,