Fix Cppcheck warning

[ci skip]

cli/cppcheckexecutor.cpp

@@ -579,7 +579,7 @@ namespace {
             return;
         const HANDLE hProcess   = GetCurrentProcess();
         const HANDLE hThread    = GetCurrentThread();
-        BOOL result = pSymInitialize(
+        pSymInitialize(
             hProcess,
             nullptr,
             TRUE
@@ -607,7 +607,7 @@ namespace {
         DWORD64 displacement   = 0;
         int beyond_main=-1; // emergency exit, see below
         for (ULONG frame = 0; ; frame++) {
-            result = pStackWalk64
+            BOOL result = pStackWalk64
                           (
 #ifdef _M_IX86
                               IMAGE_FILE_MACHINE_I386,