fix more asserts

platform.d

@@ -375,9 +375,13 @@ SysThread
 CreateThread(void* proc, void* param)
 {
 	SysThread thread;
-	assert(!PThreadMutexInit(&thread.mut, null));
-	assert(!PThreadCondInit(&thread.cond, null));
-	assert(!PThreadCreate(&thread.handle, null, cast(PThreadProc)proc, param));
+	bool result;
+
+	result  = cast(bool)(!PThreadMutexInit(&thread.mut, null));
+	result &= cast(bool)(!PThreadCondInit(&thread.cond, null));
+	result &= cast(bool)(!PThreadCreate(&thread.handle, null, cast(PThreadProc)proc, param));
+	assert(result);
+
 	return thread;
 }
 
@@ -1064,7 +1068,8 @@ MemAlloc(u64 size)
 void
 MemFree(void* ptr, u64 size)
 {
-	assert(munmap(ptr, size) == 0, "MemFree failure");
+	auto result = munmap(ptr, size);
+	assert(result == 0, "MemFree failure");
 }
 
 struct Watcher