patch 8.1.2078: build error with +textprop but without +terminal

Problem:    Build error with +textprop but without +terminal. (Tony Mechelynck)
Solution:   Add #ifdef.
diff --git a/src/popupwin.c b/src/popupwin.c
index 5425d09..d4b3d7c 100644
--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -1638,11 +1638,13 @@
 		semsg(_(e_nobufnr), argvars[0].vval.v_number);
 		return NULL;
 	    }
+#ifdef FEAT_TERMINAL
 	    if (buf->b_term != NULL)
 	    {
 		emsg(_("E278: Cannot put a terminal buffer in a popup window"));
 		return NULL;
 	    }
+#endif
 	}
 	else if (!(argvars[0].v_type == VAR_STRING
 			&& argvars[0].vval.v_string != NULL)
diff --git a/src/version.c b/src/version.c
index 401c18d..af7ee23 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2078,
+/**/
     2077,
 /**/
     2076,