Remove tabs in configure.

Change-Id: I0b6a1781ab3bf8e32874fe71e24a4cb8c9943357
diff --git a/configure b/configure
index 5039624..c0eae77 100755
--- a/configure
+++ b/configure
@@ -580,11 +580,8 @@
       log_echo "daala_dct64 requires tx64x64, so disabling daala_dct64"
       disable_feature daala_dct64
     fi
-    if enabled daala_dct4 ||
-	    enabled daala_dct8 ||
-	    enabled daala_dct16 ||
-	    enabled daala_dct32 ||
-	    enabled daala_dct64; then
+    if enabled daala_dct4 || enabled daala_dct8 || enabled daala_dct16 ||
+        enabled daala_dct32 || enabled daala_dct64; then
       disable_feature rect_tx
       disable_feature var_tx
       disable_feature lgt