scripted-diff: rename pszThread to thread_name

Since it is now a string_view instead of a const char*, update the
name to reflect that the variable is no longer a "Pointer to
String, Zero-terminated" (psz).

-BEGIN VERIFY SCRIPT-
sed -i s/pszThread/thread_name/ $(git grep -l pszThread src)
-END VERIFY SCRIPT-

Author: stickies-v

src/util/system.cpp

@@ -831,7 +831,7 @@ std::string HelpMessageOpt(const std::string &option, const std::string &message
            std::string("\n\n");
 }
 
-static std::string FormatException(const std::exception* pex, std::string_view pszThread)
+static std::string FormatException(const std::exception* pex, std::string_view thread_name)
 {
 #ifdef WIN32
     char pszModule[MAX_PATH] = "";
@@ -841,15 +841,15 @@ static std::string FormatException(const std::exception* pex, std::string_view p
 #endif
     if (pex)
         return strprintf(
-            "EXCEPTION: %s       \n%s       \n%s in %s       \n", typeid(*pex).name(), pex->what(), pszModule, pszThread);
+            "EXCEPTION: %s       \n%s       \n%s in %s       \n", typeid(*pex).name(), pex->what(), pszModule, thread_name);
     else
         return strprintf(
-            "UNKNOWN EXCEPTION       \n%s in %s       \n", pszModule, pszThread);
+            "UNKNOWN EXCEPTION       \n%s in %s       \n", pszModule, thread_name);
 }
 
-void PrintExceptionContinue(const std::exception* pex, std::string_view pszThread)
+void PrintExceptionContinue(const std::exception* pex, std::string_view thread_name)
 {
-    std::string message = FormatException(pex, pszThread);
+    std::string message = FormatException(pex, thread_name);
     LogPrintf("\n\n************************\n%s\n", message);
     tfm::format(std::cerr, "\n\n************************\n%s\n", message);
 }

src/util/system.h

@@ -51,7 +51,7 @@ bool error(const char* fmt, const Args&... args)
     return false;
 }
 
-void PrintExceptionContinue(const std::exception* pex, std::string_view pszThread);
+void PrintExceptionContinue(const std::exception* pex, std::string_view thread_name);
 
 /**
  * Ensure file contents are fully committed to disk, using a platform-specific