Dpkg::Source::Patch: Add missing preposition in error message

debian/changelog

@@ -90,6 +90,7 @@ dpkg (1.18.0) UNRELEASED; urgency=low
     - Say directory instead of dir in output messages.
     - Merge the same dpkg-scanpackages warning messages into a single line.
     - Clarify dpkg-genchanges changes description open error.
+    - Add missing preposition in Dpkg::Source::Patch error message.
 
   [ Raphaël Hertzog ]
   * Drop myself from Uploaders.

scripts/Dpkg/Source/Patch.pm

@@ -426,7 +426,8 @@ sub analyze {
 	    $fn{old} = $line;
 	}
 	if ($line =~ /\.dpkg-orig$/) {
-	    error(g_("diff `%s' patches file with name ending .dpkg-orig"), $diff);
+	    error(g_("diff '%s' patches file with name ending in .dpkg-orig"),
+	          $diff);
 	}
 
 	$line = _getline($self);