patch 8.2.1908: Lua is initialized even when not used

Problem:    Lua is initialized even when not used.
Solution:   Put lua_init() after check for "eap->skip". (Christian Brabandt,
            closes #7191).  Avoid compiler warnings.
diff --git a/src/version.c b/src/version.c
index 52d64fc..91736ec 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1908,
+/**/
     1907,
 /**/
     1906,