titlebar: snip two superfluous tests for having enough space

If nano has less than four columns available, it will die,
so there will always be room for at least four characters.

src/nano.h

@@ -563,7 +563,7 @@ enum
 #define MAIN_VISIBLE (((COLS + 40) / 20) * 2)
 
 /* The minimum editor window columns and rows required for nano to work
- * correctly. */
+ * correctly.  Don't make these smaller than 4 and 1. */
 #define MIN_EDITOR_COLS 4
 #define MIN_EDITOR_ROWS 1
 

src/winio.c

@@ -1980,27 +1980,18 @@ void titlebar(const char *path)
 
     blank_titlebar();
 
-    /* space has to be at least 4: two spaces before the version message,
-     * at least one character of the version message, and one space
-     * after the version message. */
-    if (space < 4)
-	space = 0;
-    else {
-	/* Limit verlen to 1/3 the length of the screen in columns,
-	 * minus three columns for spaces. */
-	if (verlen > (COLS / 3) - 3)
-	    verlen = (COLS / 3) - 3;
-    }
-
-    if (space >= 4) {
-	/* Add a space after the version message, and account for both
-	 * it and the two spaces before it. */
-	mvwaddnstr(topwin, 0, 2, BRANDING, actual_x(BRANDING, verlen));
-	verlen += 3;
-
-	/* Account for the full length of the version message. */
-	space -= verlen;
-    }
+    /* Limit the length of the version message to a third of the width of
+     * the screen, minus three columns for spaces. */
+    if (verlen > (COLS / 3) - 3)
+	verlen = (COLS / 3) - 3;
+
+    /* Leave two spaces before the version message, and account also
+     * for the space after it. */
+     mvwaddnstr(topwin, 0, 2, BRANDING, actual_x(BRANDING, verlen));
+     verlen += 3;
+
+    /* Account for the full length of the version message. */
+    space -= verlen;
 
 #ifndef DISABLE_BROWSER
     /* Don't display the state if we're in the file browser. */