patch 8.2.3967: error messages are spread out

Problem:    Error messages are spread out.
Solution:   Move more errors to errors.h.
diff --git a/src/typval.c b/src/typval.c
index 34ff47c..0afd572 100644
--- a/src/typval.c
+++ b/src/typval.c
@@ -1388,7 +1388,7 @@
 	if (tv1->v_type != tv2->v_type)
 	    emsg(_("E977: Can only compare Blob with Blob"));
 	else
-	    emsg(_(e_invalblob));
+	    emsg(_(e_invalid_operation_for_blob));
 	return FAIL;
     }
     else