fix: strip trailing string from Misra C id extraction

Author: William Jakobsson

lib/errorlogger.cpp

@@ -1081,11 +1081,11 @@ std::string getGuideline(const std::string &errId, ReportType reportType,
     case ReportType::misraC2023:
     case ReportType::misraC2025:
         if (errId.rfind("misra-c20", 0) == 0 || errId.rfind("premium-misra-c-20", 0) == 0) {
-            auto dashPos = errId.rfind('-');
-            while (dashPos != std::string::npos && isalpha(errId[dashPos + 1])) {
-                dashPos = errId.rfind('-', dashPos - 1);
-            }
-            guideline = errId.substr(dashPos + 1, errId.find('-', dashPos + 1) - dashPos - 1);
+            auto pos1 = errId.find("20") + 5;
+            if (errId.compare(pos1,4,"dir-",0,4) == 0)
+                pos1 += 4;
+            const auto endpos = errId.find('-', pos1);
+            guideline = errId.substr(pos1, endpos-pos1);
         }
         break;
     case ReportType::misraCpp2008: