Fix compilation error on Android.

Public issue https://github.com/mackron/miniaudio/issues/805

miniaudio.h

@@ -16169,7 +16169,11 @@ static ma_result ma_thread_create__posix(ma_thread* pThread, ma_thread_priority
 
                 /* I'm not treating a failure of setting the priority as a critical error so not aborting on failure here. */
                 if (pthread_attr_setschedparam(&attr, &sched) == 0) {
-                    pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED);
+                    #if !defined(MA_ANDROID) || (defined(__ANDROID_API__) && __ANDROID_API__ >= 28)
+                    {
+                        pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED);
+                    }
+                    #endif
                 }
             }
         }