Use 4 spaces for indentation in test applications

hello/hello-tls.c

@@ -9,29 +9,29 @@ static __thread int tlsvar = 1;
 #endif
 
 static unsigned __stdcall threadfunc(void* arg) {
-	int id = (int)arg;
-	printf("thread %d, tlsvar %p initially %d\n", id, &tlsvar, tlsvar);
-	tlsvar = id + 100;
-	for (int i = 0; i < 4; i++) {
-		printf("thread %d, tlsvar %p %d\n", id, &tlsvar, tlsvar);
-		tlsvar += 10;
-		Sleep(500);
-	}
-	return 0;
+    int id = (int)arg;
+    printf("thread %d, tlsvar %p initially %d\n", id, &tlsvar, tlsvar);
+    tlsvar = id + 100;
+    for (int i = 0; i < 4; i++) {
+        printf("thread %d, tlsvar %p %d\n", id, &tlsvar, tlsvar);
+        tlsvar += 10;
+        Sleep(500);
+    }
+    return 0;
 }
 
 int main(int argc, char* argv[]) {
-	HANDLE threads[3];
+    HANDLE threads[3];
 
-	for (int i = 0; i < 3; i++) {
-		printf("mainthread, tlsvar %p %d\n", &tlsvar, tlsvar);
-		tlsvar += 10;
-		threads[i] = (HANDLE)_beginthreadex(NULL, 0, threadfunc, (void*)(intptr_t) (i + 1), 0, NULL);
-		Sleep(350);
-	}
-	for (int i = 0; i < 3; i++) {
-		WaitForSingleObject(threads[i], INFINITE);
-		CloseHandle(threads[i]);
-	}
-	return 0;
+    for (int i = 0; i < 3; i++) {
+        printf("mainthread, tlsvar %p %d\n", &tlsvar, tlsvar);
+        tlsvar += 10;
+        threads[i] = (HANDLE)_beginthreadex(NULL, 0, threadfunc, (void*)(intptr_t) (i + 1), 0, NULL);
+        Sleep(350);
+    }
+    for (int i = 0; i < 3; i++) {
+        WaitForSingleObject(threads[i], INFINITE);
+        CloseHandle(threads[i]);
+    }
+    return 0;
 }