Fix CI follow-up failures

Author: Vanderhell

.github/workflows/ci.yml

@@ -96,9 +96,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
 
+      - name: Set up MSVC developer command prompt
+        uses: ilammy/msvc-dev-cmd@v1
+
       - name: Configure and build with MSVC
         run: |
-          cmake -S . -B build -G "Visual Studio 17 2022" -A x64 -DMCBOR_BUILD_TESTS=ON
+          cmake -S . -B build -G Ninja -DMCBOR_BUILD_TESTS=ON
           cmake --build build --config Release
 
   arm-compile-only:

src/mcbor.c

@@ -361,13 +361,12 @@ mcbor_err_t mcbor_enc_null(mcbor_enc_t *enc)
 
 mcbor_err_t mcbor_enc_float(mcbor_enc_t *enc, float value)
 {
-    uint8_t tmp[5];
-
     if (enc == NULL) return MCBOR_ERR_NULL;
 #if !MCBOR_ENABLE_FLOAT32
     (void)value;
     return MCBOR_ERR_UNSUPPORTED;
 #else
+    uint8_t tmp[5];
 
     tmp[0] = (uint8_t)(CBOR_MAJOR_SIMPLE | CBOR_INFO_4BYTE);
     put_u32(tmp + 1, float_to_bits(value));