Revert "slightly more detailed cmdmsg"

This reverts commit 3b285a1024f3115a6af6da1b0d7d637548a0bf1c.

Author: yiwu0b11

flang/runtime/execute.cpp

@@ -76,8 +76,7 @@ int TerminationCheck(int status, const Descriptor *cmdstat,
           "Invalid command quit with exit status code: %d", exitStatusVal);
     } else {
       StoreIntToDescriptor(cmdstat, INVALID_CL_ERR, terminator);
-      CheckAndCopyCharsToDescriptor(cmdmsg,
-          "Invalid command line: check for exitstat and console printout");
+      CheckAndCopyCharsToDescriptor(cmdmsg, "Invalid command line");
     }
   }
   if (status == -1) {

flang/unittests/Runtime/CommandTest.cpp

@@ -344,8 +344,7 @@ TEST_F(ZeroArguments, ECLInvalidCommandErrorSync) {
   bool wait{true};
   OwningPtr<Descriptor> exitStat{IntDescriptor(404)};
   OwningPtr<Descriptor> cmdStat{IntDescriptor(202)};
-  OwningPtr<Descriptor> cmdMsg{CharDescriptor(
-      "cmdmsg will not modify the remaining buffer XXXXXXXXXXXXXXXXXXXXX")};
+  OwningPtr<Descriptor> cmdMsg{CharDescriptor("Message ChangedXXXXXXXXX")};
 
   RTNAME(ExecuteCommandLine)
   (*command.get(), wait, exitStat.get(), cmdStat.get(), cmdMsg.get());
@@ -355,8 +354,7 @@ TEST_F(ZeroArguments, ECLInvalidCommandErrorSync) {
   CheckDescriptorEqInt<std::int64_t>(exitStat.get(), 127);
 #endif
   CheckDescriptorEqInt<std::int64_t>(cmdStat.get(), 3);
-  CheckDescriptorEqStr(cmdMsg.get(),
-      "Invalid command line: check for exitstat and console printoutXXXX");
+  CheckDescriptorEqStr(cmdMsg.get(), "Invalid command lineXXXX");
 }
 
 TEST_F(ZeroArguments, ECLInvalidCommandTerminatedSync) {