patch 8.2.1088: a very long translation might cause a buffer overflow

Problem:    A very long translation might cause a buffer overflow.
Solution:   Trunctate the message if needed.

src/fileio.c

@@ -52,10 +52,14 @@ filemess(
     if (msg_silent != 0)
 	return;
     msg_add_fname(buf, name);	    // put file name in IObuff with quotes
+
     // If it's extremely long, truncate it.
-    if (STRLEN(IObuff) > IOSIZE - 80)
-	IObuff[IOSIZE - 80] = NUL;
-    STRCAT(IObuff, s);
+    if (STRLEN(IObuff) > IOSIZE - 100)
+	IObuff[IOSIZE - 100] = NUL;
+
+    // Avoid an over-long translation to cause trouble.
+    STRNCAT(IObuff, s, 99);
+
     /*
      * For the first message may have to start a new line.
      * For further ones overwrite the previous one, reset msg_scroll before

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1088,
 /**/
     1087,
 /**/