From d2ba9d09628e1f0548e5a8747b222e713f6f4055 Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@kdab.com>
Date: Sun, 7 Sep 2014 21:22:27 +0200
Subject: [PATCH] QIcon: use qEnvironmentVariableIsEmpty()
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It doesn't allocate memory, so cannot throw and is a lot faster
than qgetenv().

Change-Id: I427aa5bf5b8d76aabdd5ce5950e9e6762f79b8d8
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
---
 src/gui/image/qicon.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gui/image/qicon.cpp b/src/gui/image/qicon.cpp
index 1e4a9ebe8c..aa39e91863 100644
--- a/src/gui/image/qicon.cpp
+++ b/src/gui/image/qicon.cpp
@@ -1032,7 +1032,7 @@ void QIcon::addFile(const QString &fileName, const QSize &size, Mode mode, State
     d->engine->addFile(fileName, size, mode, state);
 
     // Check if a "@2x" file exists and add it.
-    static bool disable2xImageLoading = !qgetenv("QT_HIGHDPI_DISABLE_2X_IMAGE_LOADING").isEmpty();
+    static bool disable2xImageLoading = !qEnvironmentVariableIsEmpty("QT_HIGHDPI_DISABLE_2X_IMAGE_LOADING");
     if (!disable2xImageLoading && qApp->devicePixelRatio() > 1.0) {
         int dotIndex = fileName.lastIndexOf(QLatin1Char('.'));
         if (dotIndex != -1) {