[gjs/esm/static-imports] Fix string length calculation.

[Evan Welsh <ewlsh src gnome org>]

commit 2d19d9858de9475a333c3365e10ebb4e597efad9
Author: Evan Welsh <noreply evanwelsh com>
Date:   Sat Nov 14 14:38:17 2020 -0600

    Fix string length calculation.

 gjs/internal.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gjs/internal.cpp b/gjs/internal.cpp
index a92fa732..d769695e 100644
--- a/gjs/internal.cpp
+++ b/gjs/internal.cpp
@@ -247,7 +247,7 @@ static bool compile_module(JSContext* cx, JS::CallArgs args) {
 
     JS::UniqueChars uri = JS_EncodeStringToUTF8(cx, s1);
     JS::UniqueChars text = JS_EncodeStringToUTF8(cx, s2);
-    size_t text_len = JS_GetStringLength(s2);
+    size_t text_len = strlen(text.get());
 
     JS::CompileOptions options(cx);
     options.setFileAndLine(uri.get(), 1).setSourceIsLazy(false);