Fix compiler warning

CMakePresets.json

@@ -32,6 +32,40 @@
       },
       "warnings": {
         "dev": false
+      },
+      "vendor": {
+        "microsoft.com/VisualStudioSettings/CMake/1.0": {
+          "hostOS": [ "Linux" ]
+        }
+      }
+    },
+    {
+      // Don't inherit from "default", as we don't want UHD_DIR etc set
+      "name": "default-windows",
+      "binaryDir": "c:/users/jon/source/repos/sdrangel/build",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "RelWithDebInfo",
+        "DEBUG_OUTPUT": "ON",
+        "RX_SAMPLE_24BIT": "ON",
+        "DARCH_OPT": "SSE4_1",
+        "HIDE_CONSOLE": "OFF",
+        "ENABLE_AIRSPY": "ON",
+        "ENABLE_BLADERF": "OFF",
+        "ENABLE_HACKRF": "OFF",
+        "ENABLE_IIO": "OFF",
+        "ENABLE_MIRISDR": "OFF",
+        "ENABLE_PERSEUS": "OFF",
+        "ENABLE_XTRX": "OFF",
+        "BUILD_SERVER": "OFF",
+        "CMAKE_PREFIX_PATH": "C:/Qt/5.15.2/msvc2019_64;C:/Applications/boost_1_81_0"
+      },
+      "warnings": {
+        "dev": false
+      },
+      "vendor": {
+        "microsoft.com/VisualStudioSettings/CMake/1.0": {
+          "hostOS": [ "Windows" ]
+        }
       }
     },
     {
@@ -48,6 +82,10 @@
       "name": "default",
       "configurePreset": "default"
     },
+    {
+      "name": "default-windows",
+      "configurePreset": "default-windows"
+    },
     {
       "name": "default-qt6",
       "configurePreset": "default-qt6"