git-p4: Fix indentation from tab to spaces

Signed-off-by: Toby Allsopp <toby.allsopp@navman.co.nz>

contrib/fast-import/git-p4

@@ -1646,7 +1646,7 @@ class P4Clone(P4Sync):
         depotPath = args[0]
         depotDir = re.sub("(@[^@]*)$", "", depotPath)
         depotDir = re.sub("(#[^#]*)$", "", depotDir)
-	depotDir = re.sub(r"\.\.\.$", "", depotDir)
+        depotDir = re.sub(r"\.\.\.$", "", depotDir)
         depotDir = re.sub(r"/$", "", depotDir)
         return os.path.split(depotDir)[1]