Fix missing braces

src/ImageSharp/Compression/Zlib/Adler32.cs

@@ -91,6 +91,7 @@ namespace SixLabors.ImageSharp.Compression.Zlib
 
             int index = 0;
             fixed (byte* bufferPtr = buffer)
+            {
                 fixed (byte* tapPtr = Tap1Tap2)
                 {
                     index += (int)blocks * BLOCK_SIZE;
@@ -202,6 +203,7 @@ namespace SixLabors.ImageSharp.Compression.Zlib
                     return s1 | (s2 << 16);
                 }
             }
+        }
 #endif
 
         [MethodImpl(InliningOptions.HotPath | InliningOptions.ShortMethod)]

src/ImageSharp/Compression/Zlib/Crc32.cs

@@ -83,6 +83,7 @@ namespace SixLabors.ImageSharp.Compression.Zlib
             int length = chunksize;
 
             fixed (byte* bufferPtr = buffer)
+            {
                 fixed (ulong* k05PolyPtr = K05Poly)
                 {
                     byte* localBufferPtr = bufferPtr;
@@ -196,6 +197,7 @@ namespace SixLabors.ImageSharp.Compression.Zlib
                     return buffer.Length - chunksize == 0 ? crc : CalculateScalar(crc, buffer.Slice(chunksize));
                 }
             }
+        }
 #endif
 
         [MethodImpl(InliningOptions.HotPath | InliningOptions.ShortMethod)]