Formatting

Author: pakrym

shared/Microsoft.Extensions.Buffers.MemoryPool.Sources/MemoryPoolThrowHelper.cs

@@ -72,6 +72,8 @@ private static string GenerateMessage(string message, params DiagnosticPoolBlock
             StringBuilder builder = new StringBuilder(message);
             foreach (var diagnosticPoolBlock in blocks)
             {
+                builder.AppendLine();
+
                 if (diagnosticPoolBlock.Leaser != null)
                 {
                     builder.AppendLine("Block leased from:");

test/Microsoft.Extensions.Internal.Test/DiagnosticMemoryPoolTests.cs

@@ -40,7 +40,7 @@ public void DoubleBlockDisposeThrows()
             var block = memoryPool.Rent();
             block.Dispose();
             var exception = Assert.Throws<InvalidOperationException>(() => block.Dispose());
-            Assert.Equal("Object is being disposed twice", exception.Message);
+            Assert.Equal("Block is being disposed twice", exception.Message);
 
             ExpectDisposeAggregateException(memoryPool, exception);
         }