Fix for bug #1442 pythonstartup addition of minor error checking

Python failed to report an error when it wasn't able to open the PYTHONSTARTUP file.

Modules/main.c

@@ -132,6 +132,16 @@ static void RunStartupFile(PyCompilerFlags *cf)
 			(void) PyRun_SimpleFileExFlags(fp, startup, 0, cf);
 			PyErr_Clear();
 			fclose(fp);
+		} else {
+			int save_errno;
+			
+			save_errno = errno;
+			PySys_WriteStderr("Could not open PYTHONSTARTUP\n");
+			errno = save_errno;
+			PyErr_SetFromErrnoWithFilename(PyExc_IOError,
+					startup);
+			PyErr_Print();
+			PyErr_Clear();
 		}
 	}
 }