Fix windows build

Author: fabiomestre

test/conformance/source/environment.cpp

@@ -14,6 +14,7 @@
 
 #include <uur/environment.h>
 #include <uur/utils.h>
+#include <ur_util.hpp>
 
 namespace uur {
 
@@ -183,9 +184,9 @@ PlatformEnvironment::parsePlatformOptions(int argc, char **argv) {
     /* If a platform was not provided using the --platform command line option,
      * check if environment variable is set to use as a fallback. */
     if (options.platform_name.empty()) {
-        const char *env_platform = std::getenv("UR_CTS_ADAPTER_PLATFORM");
-        if (env_platform) {
-            options.platform_name = env_platform;
+        auto env_platform = ur_getenv("UR_CTS_ADAPTER_PLATFORM");
+        if (env_platform.has_value()) {
+            options.platform_name = env_platform.value();
         }
     }