Fix process name compatibility with legacy modules

CorePath check both of them before injecting.

Moreover, we fix a compilation waring of null string.

Author: JingMatrix

legacy/src/main/java/org/matrix/vector/legacy/LegacyDelegateImpl.java

@@ -54,7 +54,9 @@ public void onSystemServerLoaded(ClassLoader classLoader) {
         XposedInit.loadedPackagesInProcess.add("android");
         XC_LoadPackage.LoadPackageParam lpparam = new XC_LoadPackage.LoadPackageParam(XposedBridge.sLoadedPackageCallbacks);
         lpparam.packageName = "android";
-        lpparam.processName = "system_server";
+        // For comptibility, we set the process name of `system_server` as `android`.
+        // https://github.com/rovo89/XposedBridge/blob/art/app/src/main/java/de/robv/android/xposed/XposedInit.java
+        lpparam.processName = "android";
         lpparam.classLoader = classLoader;
         lpparam.isFirstApplication = true;
         XC_LoadPackage.callAll(lpparam);

xposed/src/main/kotlin/org/matrix/vector/impl/hookers/LoadedApkHookers.kt

@@ -57,7 +57,7 @@ private object PackageContextHelper {
             packageName = "system"
         }
 
-        return ContextInfo(packageName!!, processName!!, isFirstPackage)
+        return ContextInfo(packageName, processName, isFirstPackage)
     }
 }