fix small magicksave error

copy-paste fail meant that IM exceptions were not inherited correctly

see 1619c8b1a1 (commitcomment-31838043)

ChangeLog

@@ -1,3 +1,6 @@
+4/1/19 started 8.7.4
+- magicksave with magick6 API did not chain exceptions correctly [kleisauke]
+
 21/11/18 started 8.7.3
 - fix infinite loop for autofit with non-scaleable font 
 - mapim was not offsetting by window offset [erdmann]

configure.ac

@@ -2,7 +2,7 @@
 
 # also update the version number in the m4 macros below
 
-AC_INIT([vips], [8.7.3], [vipsip@jiscmail.ac.uk])
+AC_INIT([vips], [8.7.4], [vipsip@jiscmail.ac.uk])
 # required for gobject-introspection
 AC_PREREQ(2.62)
 
@@ -18,7 +18,7 @@ AC_CONFIG_MACRO_DIR([m4])
 # user-visible library versioning
 m4_define([vips_major_version], [8])
 m4_define([vips_minor_version], [7])
-m4_define([vips_micro_version], [3])
+m4_define([vips_micro_version], [4])
 m4_define([vips_version],
           [vips_major_version.vips_minor_version.vips_micro_version])
 
@@ -38,7 +38,7 @@ VIPS_VERSION_STRING=$VIPS_VERSION-`date -u -r ChangeLog`
 #   binary interface changes not backwards compatible?: reset age to 0
 
 LIBRARY_CURRENT=51
-LIBRARY_REVISION=4
+LIBRARY_REVISION=5
 LIBRARY_AGE=9
 
 # patched into include/vips/version.h

libvips/foreign/magick.c

@@ -248,9 +248,9 @@ magick_destroy_exception( ExceptionInfo *exception )
 void
 magick_inherit_exception( ExceptionInfo *exception, Image *image ) 
 {
-#ifdef HAVE_INHERITEXCEPTIONINFO
+#ifdef HAVE_INHERITEXCEPTION
 	InheritException( exception, &image->exception );
-#endif /*HAVE_INHERITEXCEPTIONINFO*/
+#endif /*HAVE_INHERITEXCEPTION*/
 }
 
 void