Avoid casting volatile void* to void*. NFC.

Author: kleisauke

system/lib/libc/musl/src/internal/pthread_impl.h

@@ -217,7 +217,7 @@ static inline void __futexwait(volatile void *addr, int val, int priv)
 {
 #ifdef __EMSCRIPTEN__
 	(void)priv;
-	emscripten_futex_wait((void*)addr, val, INFINITY);
+	emscripten_futex_wait(addr, val, INFINITY);
 #else
 	if (priv) priv = FUTEX_PRIVATE;
 	__syscall(SYS_futex, addr, FUTEX_WAIT|priv, val, 0) != -ENOSYS ||

system/lib/libc/musl/src/thread/__timedwait.c

@@ -86,11 +86,11 @@ int __timedwait_cp(volatile int *addr, int val,
 			}
 			if (waitMsecs > maxMsecsSliceToSleep)
 				waitMsecs = maxMsecsSliceToSleep;
-			r = -emscripten_futex_wait((void*)addr, val, waitMsecs);
+			r = -emscripten_futex_wait(addr, val, waitMsecs);
 		} while(r == ETIMEDOUT);
 	} else {
 		// Can wait in one go.
-		r = -emscripten_futex_wait((void*)addr, val, msecsToSleep);
+		r = -emscripten_futex_wait(addr, val, msecsToSleep);
 	}
 #else
 	r = -__futex4_cp(addr, FUTEX_WAIT|priv, val, top);

system/lib/libc/musl/src/thread/__wait.c

@@ -29,11 +29,11 @@ void __wait(volatile int *addr, volatile int *waiters, int val, int priv)
 				}
 				// Assist other threads by executing proxied operations that are effectively singlethreaded.
 				if (is_main_thread) emscripten_main_thread_process_queued_calls();
-				e = emscripten_futex_wait((void*)addr, val, maxMsecsSliceToSleep);
+				e = emscripten_futex_wait(addr, val, maxMsecsSliceToSleep);
 			} while(e == -ETIMEDOUT);
 		} else {
 			// Can wait in one go.
-			emscripten_futex_wait((void*)addr, val, INFINITY);
+			emscripten_futex_wait(addr, val, INFINITY);
 		}
 	}
 #else