patch 8.1.0441: build failure without command line history

Problem:    Build failure without command line history.
Solution:   Move cmdline_init() outside of #ifdef.
diff --git a/src/ex_getln.c b/src/ex_getln.c
index e1642d1..6442598 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -775,6 +775,12 @@
 }
 #endif
 
+    void
+cmdline_init(void)
+{
+    vim_memset(&ccline, 0, sizeof(struct cmdline_info));
+}
+
 /*
  * getcmdline() - accept a command line starting with firstc.
  *
@@ -7046,12 +7052,6 @@
     }
 }
 
-    void
-cmdline_init(void)
-{
-    vim_memset(&ccline, 0, sizeof(struct cmdline_info));
-}
-
 /*
  * Write history to viminfo file in "fp".
  * When "merge" is TRUE merge history lines with a previously read viminfo