patch 8.1.0362: cannot get the script line number when executing a function

Problem:    Cannot get the script line number when executing a function.
Solution:   Store the line number besides the script ID. (Ozaki Kiichi,
            closes #3362)  Also display the line number with ":verbose set".
diff --git a/src/main.c b/src/main.c
index d3a509b..cb0676c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2912,13 +2912,13 @@
 	curwin->w_cursor.lnum = 0; /* just in case.. */
 	sourcing_name = (char_u *)_("pre-vimrc command line");
 # ifdef FEAT_EVAL
-	current_SID = SID_CMDARG;
+	current_sctx.sc_sid = SID_CMDARG;
 # endif
 	for (i = 0; i < cnt; ++i)
 	    do_cmdline_cmd(cmds[i]);
 	sourcing_name = NULL;
 # ifdef FEAT_EVAL
-	current_SID = 0;
+	current_sctx.sc_sid = 0;
 # endif
 	TIME_MSG("--cmd commands");
     }
@@ -2942,7 +2942,7 @@
 	curwin->w_cursor.lnum = 0;
     sourcing_name = (char_u *)"command line";
 #ifdef FEAT_EVAL
-    current_SID = SID_CARG;
+    current_sctx.sc_sid = SID_CARG;
 #endif
     for (i = 0; i < parmp->n_commands; ++i)
     {
@@ -2952,7 +2952,7 @@
     }
     sourcing_name = NULL;
 #ifdef FEAT_EVAL
-    current_SID = 0;
+    current_sctx.sc_sid = 0;
 #endif
     if (curwin->w_cursor.lnum == 0)
 	curwin->w_cursor.lnum = 1;
@@ -3159,7 +3159,7 @@
     char_u	*save_sourcing_name;
     linenr_T	save_sourcing_lnum;
 #ifdef FEAT_EVAL
-    scid_T	save_sid;
+    sctx_T	save_current_sctx;
 #endif
 
     if ((initstr = mch_getenv(env)) != NULL && *initstr != NUL)
@@ -3171,14 +3171,15 @@
 	sourcing_name = env;
 	sourcing_lnum = 0;
 #ifdef FEAT_EVAL
-	save_sid = current_SID;
-	current_SID = SID_ENV;
+	save_current_sctx = current_sctx;
+	current_sctx.sc_sid = SID_ENV;
+	current_sctx.sc_lnum = 0;
 #endif
 	do_cmdline_cmd(initstr);
 	sourcing_name = save_sourcing_name;
 	sourcing_lnum = save_sourcing_lnum;
 #ifdef FEAT_EVAL
-	current_SID = save_sid;
+	current_sctx = save_current_sctx;
 #endif
 	return OK;
     }