Fix input binding error for git log

`git log` takes a "long" time to start producing output, which caused
PowerShell to complain repeatedly that it could not bind the `$input`
parameter. Removing the `Mandatory=$true` constraint seems to fix this.

1 files changed, 1 insertions, 1 deletions

diff --git a/pwsh-diff b/pwsh-diff
index bf10324..4dcc558 100755
--- a/pwsh-diff
+++ b/pwsh-diff
@@ -1,7 +1,7 @@
 #!/usr/bin/env pwsh
 
 param (
-    [Parameter(Mandatory=$true, ValueFromPipeline=$true)][string[]]$input
+    [Parameter(ValueFromPipeline=$true)][string[]]$input
 )
 
 $VERSION = "0.1.0"