Fix sign of safety correction

src/core/raster/qgscolorrampshader.cpp

@@ -100,7 +100,7 @@ bool QgsColorRampShader::shade( double theValue, int* theReturnRedValue, int* th
       if ( rangeValue > 0 )
       {
         int lutSize = 256; // TODO: test if speed can be increased with a different LUT size
-        mLUTFactor = ( lutSize + 0.0000001 ) / rangeValue; // increase slightly to make sure last LUT category is correct
+        mLUTFactor = ( lutSize - 0.0000001 ) / rangeValue; // decrease slightly to make sure last LUT category is correct
         idx = 0;
         double val;
         mLUT.reserve( lutSize );

src/core/raster/qgscolorrampshader.h

@@ -130,7 +130,7 @@ class CORE_EXPORT QgsColorRampShader : public QgsRasterShaderFunction
     /** Maximum size of the color cache. The color cache could eat a ton of
      * memory if you have 32-bit data
      * @deprecated will be removed in QGIS 3.0 */
-    Q_DECL_DEPRECATED int mMaximumColorCacheSize;
+    int mMaximumColorCacheSize;
 
     /** Do not render values out of range */
     bool mClip;