fix some compiler warnings

Author: kupix

src/Grains.cpp

@@ -33,7 +33,7 @@ void Grains::prepare()
 void Grains::rotate()
 {
 	std::unique_ptr<Grain> grain = std::move(vector.back());
-	for (int i = vector.size() - 1; i > 0; --i)
+	for (auto i = vector.size() - 1; i > 0; --i)
 		vector[i] = std::move(vector[i - 1]);
 	vector.front() = std::move(grain);
 

src/Resample.h

@@ -210,8 +210,8 @@ void resample(Internal &internal, External &external, double ratioBegin, double
 			BUNGEE_ASSERT1(ratioEnd > 0);
 		}
 
-		external.unmutedBegin = std::clamp<int>(external.unmutedBegin, 0, external.activeFrameCount);
-		external.unmutedEnd = std::clamp<int>(external.unmutedEnd, external.unmutedBegin, external.activeFrameCount);
+		external.unmutedBegin = std::clamp<ptrdiff_t>(external.unmutedBegin, 0, external.activeFrameCount);
+		external.unmutedEnd = std::clamp<ptrdiff_t>(external.unmutedEnd, external.unmutedBegin, external.activeFrameCount);
 
 		if (ratioBegin == ratioEnd)
 			resampleSpecial<Interpolation, Mode, true>(internal, external, ratioBegin, ratioEnd);