Minor fixes on warnings discovered while building on Windows

src/LatencyWorker.cpp

@@ -78,9 +78,9 @@ void LatencyWorker::run() {
 	RandomFunction kernel_fptr = NULL;
 	RandomFunction kernel_dummy_fptr = NULL;
 	uintptr_t* next_address = NULL;
-	uint64_t bytes_per_pass = 0; 
-	uint64_t passes = 0;
-	uint64_t p = 0;
+	uint32_t bytes_per_pass = 0; 
+	uint32_t passes = 0;
+	uint32_t p = 0;
 	tick_t start_tick = 0;
 	tick_t stop_tick = 0;
 	tick_t elapsed_ticks = 0;

src/MemoryWorker.cpp

@@ -71,7 +71,7 @@ size_t MemoryWorker::getLen() {
 }
 
 uint32_t MemoryWorker::getBytesPerPass() {
-	size_t retval = 0;
+	uint32_t retval = 0;
 	if (_acquireLock(-1)) {
 		retval = _bytes_per_pass;
 		_releaseLock();
@@ -81,7 +81,7 @@ uint32_t MemoryWorker::getBytesPerPass() {
 }
 
 uint32_t MemoryWorker::getPasses() {
-	size_t retval = 0;
+	uint32_t retval = 0;
 	if (_acquireLock(-1)) {
 		retval = _passes;
 		_releaseLock();