SWDEV-428634 - Fix vla array in hip-tests

Change-Id: I98891d79ac0b141fb0ffda28ffda3dcb3e65c326


[ROCm/hip-tests commit: 03b6ca735f]

projects/hip-tests/catch/include/hip_test_context.hh

@@ -119,7 +119,7 @@ class TestContext {
 
   static std::string getEnvVar(std::string var) {
     #if defined(_WIN32)
-    rsize_t MAX_LEN = 4096;
+    constexpr rsize_t MAX_LEN = 4096;
     char dstBuf[MAX_LEN];
     size_t dstSize;
     if (!::getenv_s(&dstSize, dstBuf, MAX_LEN, var.c_str())) {