patch 7.4.1681

Problem:    Coverity warns for fixed size buffer length (false positive).
Solution:   Add a check for the name length.

src/eval.c

@@ -933,6 +933,11 @@ eval_init(void)
     for (i = 0; i < VV_LEN; ++i)
     {
 	p = &vimvars[i];
+	if (STRLEN(p->vv_name) > 16)
+	{
+	    EMSG("INTERNAL: name too long, increase size of dictitem16_T");
+	    getout(1);
+	}
 	STRCPY(p->vv_di.di_key, p->vv_name);
 	if (p->vv_flags & VV_RO)
 	    p->vv_di.di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1681,
 /**/
     1680,
 /**/