From 8b138202cafdf8efe581863354b574fe44d73c9f Mon Sep 17 00:00:00 2001
From: Tobias Doerffel <tobias.doerffel@gmail.com>
Date: Sun, 23 Feb 2014 18:51:04 +0100
Subject: [PATCH] SpectrumAnalyzer: fixed spectrum painting

Variable aliasing due to code style fixes introduced a regression in the
darken() method.
---
 plugins/SpectrumAnalyzer/SpectrumAnalyzerControlDialog.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/plugins/SpectrumAnalyzer/SpectrumAnalyzerControlDialog.cpp b/plugins/SpectrumAnalyzer/SpectrumAnalyzerControlDialog.cpp
index 2be1c355b..9854d4c86 100644
--- a/plugins/SpectrumAnalyzer/SpectrumAnalyzerControlDialog.cpp
+++ b/plugins/SpectrumAnalyzer/SpectrumAnalyzerControlDialog.cpp
@@ -33,10 +33,11 @@
 
 static inline void darken( QImage& img, int x, int y, int w, int h )
 {
-	QRgb * base = ( (QRgb *) img.bits() ) + y*img.width() + x;
+	int imgWidth = img.width();
+	QRgb * base = ( (QRgb *) img.bits() ) + y*imgWidth + x;
 	for( int y = 0; y < h; ++y )
 	{
-		QRgb * d = base + y*w;
+		QRgb * d = base + y*imgWidth;
 		for( int x = 0; x < w; ++x )
 		{
 			// shift each color component by 1 bit and set alpha