scripted-diff: Avoid `interface` keyword to fix windows gitian build

Rename `interface` to `interfaces`

Build failure reported by Chun Kuan Lee <ken2812221@gmail.com>
https://github.com/bitcoin/bitcoin/pull/10244#issuecomment-379434756

-BEGIN VERIFY SCRIPT-

git mv src/interface src/interfaces
ren() { git grep -l "$1" | xargs sed -i "s,$1,$2,g"; }
ren interface/            interfaces/
ren interface::           interfaces::
ren BITCOIN_INTERFACE_    BITCOIN_INTERFACES_
ren "namespace interface" "namespace interfaces"

-END VERIFY SCRIPT-

1 files changed, 2 insertions, 2 deletions

diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index 40037edb9d..4a26964098 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -20,7 +20,7 @@
 class QValidatedLineEdit;
 class SendCoinsRecipient;
 
-namespace interface
+namespace interfaces
 {
     class Node;
 }
@@ -54,7 +54,7 @@ namespace GUIUtil
     QString formatBitcoinURI(const SendCoinsRecipient &info);
 
     // Returns true if given address+amount meets "dust" definition
-    bool isDust(interface::Node& node, const QString& address, const CAmount& amount);
+    bool isDust(interfaces::Node& node, const QString& address, const CAmount& amount);
 
     // HTML escaping for rich text controls
     QString HtmlEscape(const QString& str, bool fMultiLine=false);