Get the logic right on bash "-z"

skia/dependencies/make_skia_wasm.sh

diff --git a/skia/dependencies/make_skia_wasm.sh b/skia/dependencies/make_skia_wasm.sh
old mode 100755
new mode 100644
index fc4a2e7..5c8bfff
--- a/skia/dependencies/make_skia_wasm.sh
+++ b/skia/dependencies/make_skia_wasm.sh
@@ -9,9 +9,9 @@
 # GLFW requires CMake
 
 if [ -z "${PAT_GITHUB}" ]; then
-    SKIA_EXPERIMENTAL_URL=https://${PAT_GITHUB}@github.com/rive-app/skia-experimental.git
-else
     SKIA_EXPERIMENTAL_URL=git@github.com:rive-app/skia-experimental.git
+else
+    SKIA_EXPERIMENTAL_URL=https://${PAT_GITHUB}@github.com/rive-app/skia-experimental.git
 fi
 ./get_skia.sh ${SKIA_EXPERIMENTAL_URL} main skia-experimental