From cb05935f529cb270f5c0856b2649e4b0c7db830f Mon Sep 17 00:00:00 2001
From: Maarten Bent <MaartenBent@users.noreply.github.com>
Date: Wed, 20 Apr 2022 01:03:15 +0200
Subject: [PATCH] Check if GetDPI parameters are not NULL

And combine the same code for assigning the variables.
---
 src/common/graphcmn.cpp | 19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)

diff --git a/src/common/graphcmn.cpp b/src/common/graphcmn.cpp
index 179e0f2fc6..1143fe4a7b 100644
--- a/src/common/graphcmn.cpp
+++ b/src/common/graphcmn.cpp
@@ -627,19 +627,12 @@ wxDouble wxGraphicsContext::GetAlpha() const
 
 void wxGraphicsContext::GetDPI( wxDouble* dpiX, wxDouble* dpiY) const
 {
-    if ( m_window )
-    {
-        const wxSize ppi = m_window->GetDPI();
-        *dpiX = ppi.x;
-        *dpiY = ppi.y;
-    }
-    else
-    {
-        // Use some standard DPI value, it doesn't make much sense for the
-        // contexts not using any pixels anyhow.
-        *dpiX = wxDisplay::GetStdPPIValue();
-        *dpiY = wxDisplay::GetStdPPIValue();
-    }
+    const wxSize dpi = GetWindow() ? GetWindow()->GetDPI() : wxDisplay::GetStdPPI();
+
+    if (dpiX)
+        *dpiX = dpi.x;
+    if (dpiY)
+        *dpiY = dpi.y;
 }
 
 wxSize wxGraphicsContext::FromDIP(const wxSize& sz) const