envsetup: fix indent

Test: . build/envsetup.sh
Change-Id: I829dafc707dc02d5a31899a784f88a367ec95e94
Signed-off-by: Timi <timi.rautamaki@gmail.com>
diff --git a/envsetup.sh b/envsetup.sh
index 344a01a..f4cf0f6 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -108,7 +108,7 @@
     if [ "$BUILD_VAR_CACHE_READY" = "true" ]
     then
         eval "echo \"\${abs_var_cache_$1}\""
-    return
+        return
     fi
 
     local T=$(gettop)