h2load: Remove trailing white spaces

doc/h2load.h2r

@@ -20,8 +20,8 @@ requests
     likely the network level failures or stream was reset by
     RST_STREAM.
   timeout
-    The number of requests whose connection timed out before they 
-    were completed.
+    The number of requests whose connection timed out before they were
+    completed.
 
 status codes
   The number of status code h2load received.

src/h2load.cc

@@ -1144,8 +1144,7 @@ Options:
               Available protocol: )";
 #endif // !HAVE_SPDYLAY
   out << NGHTTP2_CLEARTEXT_PROTO_VERSION_ID << R"(
-              Default: )" 
-      << NGHTTP2_CLEARTEXT_PROTO_VERSION_ID << R"(
+              Default: )" << NGHTTP2_CLEARTEXT_PROTO_VERSION_ID << R"(
   -d, --data=<PATH>
               Post FILE to  server.  The request method  is changed to
               POST.
@@ -1185,8 +1184,7 @@ Options:
   -v, --verbose
               Output debug information.
   --version   Display version information and exit.
-  -h, --help  Display this help and exit.)" 
-      << std::endl;
+  -h, --help  Display this help and exit.)" << std::endl;
 }
 } // namespace
 
@@ -1442,8 +1440,7 @@ int main(int argc, char **argv) {
     }
 
     if (config.nconns == 0 && !nreqs_set_manually) {
-      std::cerr
-          << "-r: the rate option must be used with either the -n option "
+      std::cerr << "-r: the rate option must be used with either the -n option "
                    "or the -C option." << std::endl;
       exit(EXIT_FAILURE);
     }