fix bad logic and warnings

Author: tk

src/types/audio/TAudioBuffer.hpp

@@ -179,7 +179,7 @@ namespace tklb {
 				chan = channels();
 			}
 
-			chan == min(chan, channels());
+			chan = min(chan, channels());
 
 			for (Channel c = 0; c < chan; c++) {
 				set(samples[c] + offsetSrc, length, c, offsetDst);

src/util/TMath.hpp

@@ -149,8 +149,8 @@ namespace tklb {
 	template <typename T>
 	constexpr T log10(const T& x) {
 		#ifdef TKLB_NO_STDLIB
-			// TODO
-			static_assert(false, "TKLB_NO_STDLIB not log10 implemented yet");
+		static_assert(false, "TKLB_NO_STDLIB not log10 implemented yet");
+		return x;
 		#else
 			return std::log10(x);
 		#endif