Fix false positive cache check error on MinGW/GCC 10 builds

Due to incorrect default operator== on structs with C arrays.

See: #709
See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94924

src/sl/company_sl.cpp

@@ -101,7 +101,7 @@ CompanyManagerFace ConvertFromOldCompanyManagerFace(uint32_t face)
 void AfterLoadCompanyStats()
 {
 	/* Reset infrastructure statistics to zero. */
-	for (Company *c : Company::Iterate()) MemSetT(&c->infrastructure, 0);
+	for (Company *c : Company::Iterate()) c->infrastructure = {};
 
 	/* Collect airport count. */
 	for (const Station *st : Station::Iterate()) {