this is only necessary if we're actually drawing things

1 files changed, 3 insertions, 3 deletions

diff --git a/display.c b/display.c
index c9fbad9..da15311 100644
--- a/display.c
+++ b/display.c
@@ -37,11 +37,11 @@ void runes_display_get_term_size(RunesTerm *t, int *row, int *col, int *xpixel,
 
 void runes_display_glyph(RunesTerm *t, char *buf, size_t len)
 {
-    cairo_font_extents_t extents;
+    if (len) {
+        cairo_font_extents_t extents;
 
-    cairo_font_extents(t->cr, &extents);
+        cairo_font_extents(t->cr, &extents);
 
-    if (len) {
         char *nl;
         buf[len] = '\0';
         while ((nl = strchr(buf, '\n'))) {