Address signed comparisons warnings

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

src/amdgpu.cpp

@@ -34,7 +34,7 @@ void amdgpu_get_metrics()
 			gpu_info.MemClock = amdgpu_metrics.current_uclk;
 			gpu_info.apu_cpu_power = amdgpu_metrics.average_cpu_power / 1000.f;
 			int cpu_temp = 0;
-			for (int i = 0; i < cpuStats.GetCPUData().size() / 2; i++)
+			for (unsigned i = 0; i < cpuStats.GetCPUData().size() / 2; i++)
 				if (amdgpu_metrics.temperature_core[i] > cpu_temp)
             		cpu_temp = amdgpu_metrics.temperature_core[i];
 

src/mesa/util/os_time.c

@@ -187,7 +187,7 @@ os_wait_until_zero_abs_timeout(volatile int *var, int64_t timeout)
    if (!p_atomic_read(var))
       return true;
 
-   if (timeout == OS_TIMEOUT_INFINITE)
+   if (timeout == (int64_t)OS_TIMEOUT_INFINITE)
       return os_wait_until_zero(var, OS_TIMEOUT_INFINITE);
 
    while (p_atomic_read(var)) {