Without this patch, trying to open the help screen could make the program
segfault if the appropriate fonts weren't installed.

--- ace-1.4/lib/help.c	2022-02-17 03:11:56.410174316 +0000
+++ ace-1.4-alpine/lib/help.c	2022-02-17 03:46:31.476912695 +0000
@@ -179,7 +179,18 @@
   for (i=0; i<17; i++)
   {
     if (!fonts[i])
+    {
       fonts[i] = XLoadQueryFont(display, i & STYLE_TT ? "fixed" : "variable");
+      if (!fonts[i])
+      {
+          int count;
+          char **fontlist = XListFonts(display, "*", 1, &count);
+          if (count == 0)
+              abort();
+          fonts[i] = XLoadQueryFont(display, fontlist[0]);
+          XFreeFontNames(fontlist);
+      }
+    }
     thin_space[i] = XTextWidth(fonts[i], " ", 1);
   }
   for (i=0; i<NTAGS; i++)