Don't depend on String8 cast to C string

Bug: 295394788
Test: m checkbuild
Change-Id: I6aa039b6b2a4944e3537ef133f8785890d957edd
diff --git a/native/android/obb.cpp b/native/android/obb.cpp
index e990024..a14fa7e 100644
--- a/native/android/obb.cpp
+++ b/native/android/obb.cpp
@@ -42,7 +42,7 @@
 }
 
 const char* AObbInfo_getPackageName(AObbInfo* obbInfo) {
-    return obbInfo->getPackageName();
+    return obbInfo->getPackageName().c_str();
 }
 
 int32_t AObbInfo_getVersion(AObbInfo* obbInfo) {