patch 8.1.1991: still cannot build with eval but without cscope

Problem:    Still cannot build with eval but without cscope.
Solution:   Move f_cscope_connection() outside of #ifdef.
diff --git a/src/if_cscope.c b/src/if_cscope.c
index 4f359ee..aac6133 100644
--- a/src/if_cscope.c
+++ b/src/if_cscope.c
@@ -432,33 +432,6 @@
     return FALSE;
 }
 
-/*
- * "cscope_connection([{num} , {dbpath} [, {prepend}]])" function
- *
- * Checks the existence of a cscope connection.
- */
-    void
-f_cscope_connection(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
-{
-#ifdef FEAT_CSCOPE
-    int		num = 0;
-    char_u	*dbpath = NULL;
-    char_u	*prepend = NULL;
-    char_u	buf[NUMBUFLEN];
-
-    if (argvars[0].v_type != VAR_UNKNOWN
-	    && argvars[1].v_type != VAR_UNKNOWN)
-    {
-	num = (int)tv_get_number(&argvars[0]);
-	dbpath = tv_get_string(&argvars[1]);
-	if (argvars[2].v_type != VAR_UNKNOWN)
-	    prepend = tv_get_string_buf(&argvars[2], buf);
-    }
-
-    rettv->vval.v_number = cs_connection(num, dbpath, prepend);
-#endif
-}
-
 #endif
 
 
@@ -2527,4 +2500,33 @@
 
 #endif	/* FEAT_CSCOPE */
 
-/* the end */
+#if defined(FEAT_EVAL) || defined(PROTO)
+
+/*
+ * "cscope_connection([{num} , {dbpath} [, {prepend}]])" function
+ *
+ * Checks the existence of a cscope connection.
+ */
+    void
+f_cscope_connection(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
+{
+# ifdef FEAT_CSCOPE
+    int		num = 0;
+    char_u	*dbpath = NULL;
+    char_u	*prepend = NULL;
+    char_u	buf[NUMBUFLEN];
+
+    if (argvars[0].v_type != VAR_UNKNOWN
+	    && argvars[1].v_type != VAR_UNKNOWN)
+    {
+	num = (int)tv_get_number(&argvars[0]);
+	dbpath = tv_get_string(&argvars[1]);
+	if (argvars[2].v_type != VAR_UNKNOWN)
+	    prepend = tv_get_string_buf(&argvars[2], buf);
+    }
+
+    rettv->vval.v_number = cs_connection(num, dbpath, prepend);
+# endif
+}
+
+#endif // FEAT_EVAL
diff --git a/src/version.c b/src/version.c
index e7fd1cf..4d28033 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1991,
+/**/
     1990,
 /**/
     1989,