SWDEV-1 - Fix warnings while building tests (#201)

Change-Id: I7faf3446f8c9dafbbfc6bab4c6c1b756f0e4219d

catch/unit/graph/hipStreamIsCapturing.cc

@@ -133,7 +133,7 @@ void checkStreamCaptureStatus(hipStreamCaptureMode mode, hipStream_t stream) {
   REQUIRE(graphExec != nullptr);
 
   // Replay the recorded sequence multiple times
-  for (int i = 0; i < kLaunchIters; i++) {
+  for (size_t i = 0; i < kLaunchIters; i++) {
     std::fill_n(A_h.host_ptr(), N, static_cast<float>(i));
     HIP_CHECK(hipGraphLaunch(graphExec, stream));
     HIP_CHECK(hipStreamSynchronize(stream));
@@ -209,4 +209,4 @@ TEST_CASE("Unit_hipStreamIsCapturing_Positive_Thread") {
 
   HIP_CHECK(hipStreamEndCapture(stream, &graph));
   HIP_CHECK(hipGraphDestroy(graph));
-}
+}