Enable CA1851 and fix noncompliance

"Possible multiple enumerations of `IEnumerable` collection"

Author: YoshiRulz

.global.editorconfig.ini

@@ -122,6 +122,8 @@ dotnet_diagnostic.CA1829.severity = error
 dotnet_diagnostic.CA1836.severity = error
 # Avoid StringBuilder parameters for P/Invokes
 dotnet_diagnostic.CA1838.severity = suggestion
+# Possible multiple enumerations of `IEnumerable` collection
+dotnet_diagnostic.CA1851.severity = warning
 # Prefer the `IDictionary.TryGetValue(TKey, out TValue)` method
 dotnet_diagnostic.CA1854.severity = warning
 # Avoid using 'Enumerable.Any()' extension method

src/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs

@@ -154,10 +154,10 @@ public void InsertInput(int frame, string inputState)
 
 		public void InsertInput(int frame, IEnumerable<string> inputLog)
 		{
-			Log.InsertRange(frame, inputLog);
-			ShiftBindedMarkers(frame, inputLog.Count());
-			ChangeLog.AddInsertInput(frame, inputLog.ToList(), BindMarkersToInput, $"Insert {inputLog.Count()} frame(s) at {frame}");
-
+			var inputLogCopy = inputLog.ToList();
+			Log.InsertRange(frame, inputLogCopy);
+			ShiftBindedMarkers(frame, inputLogCopy.Count);
+			ChangeLog.AddInsertInput(frame, inputLogCopy, BindMarkersToInput, $"Insert {inputLogCopy.Count} frame(s) at {frame}");
 			InvalidateAfter(frame);
 		}
 

src/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Media/Disk/IPFFormat/IPFFloppyDisk.cs

@@ -65,7 +65,7 @@ public override bool ParseDisk(byte[] data)
 			// now process the blocks
 			var infoBlock = blocks.Find(static a => a.RecordType == RecordHeaderType.INFO);
 			var IMGEblocks = blocks.Where(a => a.RecordType == RecordHeaderType.IMGE).ToList();
-			var DATAblocks = blocks.Where(a => a.RecordType == RecordHeaderType.DATA);
+			var DATAblocks = blocks.Where(static block => block.RecordType is RecordHeaderType.DATA).ToArray();
 
 			DiskHeader.NumberOfTracks = (byte)(IMGEblocks.Count);
 			DiskHeader.NumberOfSides = (byte)(infoBlock.INFOmaxSide + 1);