Backpatch of 7a58d19 to 9.4, previously omitted.

Apparently by accident the above commit was backpatched to all supported
branches, except 9.4. This appears to be an error, as the issue is just
as present there.
Given the short amount of time before the next minor release, and given
the issue is documented to be fixed for 9.4, it seems like a good idea
to push this now.

Original-Author: Michael Meskes
Discussion: 75DB81BEEA95B445AE6D576A0A5C9E9364CBC11F@BPXM05GP.gisp.nec.co.jp

Author: anarazel

src/interfaces/ecpg/include/datetime.h

@@ -5,8 +5,8 @@
 
 #include <ecpg_informix.h>
 
-#ifndef _ECPGLIB_H				/* source created by ecpg which defines these
-								 * symbols */
+/* source created by ecpg which defines these symbols */
+#ifndef _ECPGLIB_H
 typedef timestamp dtime_t;
 typedef interval intrvl_t;
 #endif   /* ndef _ECPGLIB_H */

src/interfaces/ecpg/include/decimal.h

@@ -5,8 +5,8 @@
 
 #include <ecpg_informix.h>
 
-#ifndef _ECPGLIB_H				/* source created by ecpg which defines this
-								 * symbol */
+/* source created by ecpg which defines this */
+#ifndef _ECPGLIB_H
 typedef decimal dec_t;
 #endif   /* ndef _ECPGLIB_H */