Replace PrintException with PrintExceptionContinue + throw

Just a pet peeve.

(PrintException has exactly the same body as PrintExceptionContinue but
does a re-throw at the end. Move these re-throws to the call
site, this aids understanding what is going on as well as eliminates a
bit of code duplication in util.cpp)

src/rpcclient.cpp

@@ -236,7 +236,8 @@ int CommandLineRPC(int argc, char *argv[])
         nRet = abs(RPC_MISC_ERROR);
     }
     catch (...) {
-        PrintException(NULL, "CommandLineRPC()");
+        PrintExceptionContinue(NULL, "CommandLineRPC()");
+        throw;
     }
 
     if (strPrint != "")