exterminate File.OpenWrite usage

src/BizHawk.Client.EmuHawk/RetroAchievements/RCheevos.cs

@@ -283,7 +283,7 @@ namespace BizHawk.Client.EmuHawk
 			{
 				var buffer = new byte[(int)size];
 				_lib.rc_runtime_serialize_progress(buffer, _runtime, IntPtr.Zero);
-				using var file = File.OpenWrite(path + ".rap");
+				using var file = File.Create(path + ".rap");
 				file.Write(buffer, 0, buffer.Length);
 			}
 		}
@@ -697,4 +697,4 @@ namespace BizHawk.Client.EmuHawk
 #endif
 		}
 	}
-}
+}

src/BizHawk.Emulation.DiscSystem/DiscFormats/CCD_format.cs

@@ -438,8 +438,8 @@ namespace BizHawk.Emulation.DiscSystem
 			var buf2448 = new byte[2448];
 			var dsr = new DiscSectorReader(disc);
 
-			using var imgFile = File.OpenWrite(imgPath);
-			using var subFile = File.OpenWrite(subPath);
+			using var imgFile = File.Create(imgPath);
+			using var subFile = File.Create(subPath);
 			var nLBA = disc.Sessions[disc.Sessions.Count - 1].LeadoutLBA;
 			for (var lba = 0; lba < nLBA; lba++)
 			{

src/BizHawk.Emulation.DiscSystem/DiscFormats/CHD_format.cs

@@ -878,7 +878,7 @@ namespace BizHawk.Emulation.DiscSystem
 				throw new NotSupportedException("CHD does not support multisession discs");
 			}
 
-			using var fs = File.OpenWrite(path);
+			using var fs = File.Create(path);
 			using var bw = new BinaryWriter(fs);
 
 			// write header