Added names to standard critical sections (suggested by Andreas
Mohr).

diff --git a/windows/cursoricon.c b/windows/cursoricon.c
index 9367042..88a8ace 100644
--- a/windows/cursoricon.c
+++ b/windows/cursoricon.c
@@ -78,7 +78,7 @@
 } ICONCACHE;
 
 static ICONCACHE *IconAnchor = NULL;
-static CRITICAL_SECTION IconCrst = CRITICAL_SECTION_INIT;
+static CRITICAL_SECTION IconCrst = CRITICAL_SECTION_INIT("IconCrst");
 static WORD ICON_HOTSPOT = 0x4242;