Fix feature test macro

The expected feature test macro is _POSIX_C_SOURCE, not _POSIX_SOURCE.

Fixes #1726 <https://github.com/Genymobile/scrcpy/issues/1726>

server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java

@@ -35,7 +35,7 @@ public class ContentProvider implements Closeable {
     private final IBinder token;
 
     private Method callMethod;
-    private int callMethodVersion;
+    private boolean callMethodLegacy;
 
     ContentProvider(ActivityManager manager, Object provider, String name, IBinder token) {
         this.manager = manager;
@@ -46,20 +46,12 @@ public class ContentProvider implements Closeable {
 
     private Method getCallMethod() throws NoSuchMethodException {
         if (callMethod == null) {
-
             try {
-                callMethod = provider.getClass()
-                        .getMethod("call", String.class, String.class, String.class, String.class, String.class, Bundle.class);
-                callMethodVersion = 0;
+                callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, String.class, Bundle.class);
             } catch (NoSuchMethodException e) {
-                // old versions
-                try {
-                    callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, String.class, Bundle.class);
-                    callMethodVersion = 1;
-                } catch (NoSuchMethodException e2) {
-                    callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, Bundle.class);
-                    callMethodVersion = 2;
-                }
+                // old version
+                callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, Bundle.class);
+                callMethodLegacy = true;
             }
         }
         return callMethod;
@@ -69,16 +61,10 @@ public class ContentProvider implements Closeable {
         try {
             Method method = getCallMethod();
             Object[] args;
-            switch (callMethodVersion) {
-                case 0:
-                    args = new Object[]{ServiceManager.PACKAGE_NAME, null, "settings", callMethod, arg, extras};
-                    break;
-                case 1:
-                    args = new Object[]{ServiceManager.PACKAGE_NAME, "settings", callMethod, arg, extras};
-                    break;
-                default:
-                    args = new Object[]{ServiceManager.PACKAGE_NAME, callMethod, arg, extras};
-                    break;
+            if (!callMethodLegacy) {
+                args = new Object[]{ServiceManager.PACKAGE_NAME, "settings", callMethod, arg, extras};
+            } else {
+                args = new Object[]{ServiceManager.PACKAGE_NAME, callMethod, arg, extras};
             }
             return (Bundle) method.invoke(provider, args);
         } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {