Attempt to shut up CoverityScan warnings about tainted values

apps/openmw/mwrender/water.cpp

@@ -527,9 +527,7 @@ void Water::createSimpleWaterStateSet(osg::Node* node, float alpha)
 
     // Add animated textures
     std::vector<osg::ref_ptr<osg::Texture2D> > textures;
-    int frameCount = Fallback::Map::getInt("Water_SurfaceFrameCount");
-    frameCount = std::min(std::max(frameCount, 0), 320);
-
+    int frameCount = std::max(0, std::min(Fallback::Map::getInt("Water_SurfaceFrameCount"), 320));
     const std::string& texture = Fallback::Map::getString("Water_SurfaceTexture");
     for (int i=0; i<frameCount; ++i)
     {
@@ -645,9 +643,7 @@ Water::~Water()
 
 void Water::listAssetsToPreload(std::vector<std::string> &textures)
 {
-    int frameCount = Fallback::Map::getInt("Water_SurfaceFrameCount");
-    frameCount = std::min(std::max(frameCount, 0), 320);
-
+    int frameCount = std::max(0, std::min(Fallback::Map::getInt("Water_SurfaceFrameCount"), 320));
     const std::string& texture = Fallback::Map::getString("Water_SurfaceTexture");
     for (int i=0; i<frameCount; ++i)
     {