Init petattr in core, not in curses

My recent change to petattr caused a crash in curses when no
petattr was used in config file - because curses was setting
petattr to curses-specific value.  Init the setting in core
instead.

src/options.c

@@ -6813,6 +6813,7 @@ initoptions_init(void)
     iflags.wc_align_status = ALIGN_BOTTOM;
     /* used by tty and curses */
     iflags.wc2_statuslines = 2;
+    iflags.wc2_petattr = ATR_INVERSE;
     /* only used by curses */
     iflags.wc2_windowborders = 2; /* 'Auto' */
 

win/curses/cursinit.c

@@ -779,17 +779,6 @@ curses_init_options(void)
     /* FIXME: this overrides explicit OPTIONS=!use_inverse */
     iflags.wc_inverse = TRUE; /* aka iflags.use_inverse; default is False */
 
-    /* fix up pet highlighting */
-    if (iflags.wc2_petattr == -1) /* shouldn't happen */
-        iflags.wc2_petattr = A_NORMAL;
-    if (iflags.wc2_petattr != A_NORMAL) {
-        /* Pet attribute specified, so hilite_pet should be true */
-        iflags.hilite_pet = TRUE;
-    } else if (iflags.hilite_pet) {
-        /* pet highlighting specified, so don't leave petattr at A_NORMAL */
-        iflags.wc2_petattr = A_REVERSE;
-    }
-
     /* curses doesn't support 's' (single message at a time; successive
        ^P's go back to earlier messages) and 'c' (combination; single
        on first and second of consecutive ^P's, full on third) */