[gnumeric] Fixed warning.

[Jean BrÃfort <jbrefort src gnome org>]

commit 96325f7b99074e9818f41649a81c7b24112b6551
Author: Jean Brefort <jean brefort normalesup org>
Date:   Sun Mar 18 18:09:10 2012 +0100

    Fixed warning.

 src/graph.c |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/src/graph.c b/src/graph.c
index bdae87f..e8b5b0e 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -875,12 +875,10 @@ gnm_go_data_vector_get_str (GODataVector *dat, unsigned i)
 		if (vec->strs && vec->strs->len > i)
 			v = g_ptr_array_index (vec->strs, i);
 	}
-	if (v == NULL) {
-		if (vec->as_col)
-			j = 0;
-		else
-			j = i, i = 0;
-		}
+	if (vec->as_col)
+		j = 0;
+	else
+		j = i, i = 0;
 	ret = render_val (((v != NULL)? v: vec->val), i, j, fmt, &ep);
 	return ret;
 }