Fix copy&paste error in the definition of ARCH_RUN_32BIT for a 3-way universal
build (all other definition where correct).
diff --git a/configure.in b/configure.in
index 7cd64d8..6f317c8 100644
--- a/configure.in
+++ b/configure.in
@@ -1063,7 +1063,7 @@
 	         elif test "$UNIVERSAL_ARCHS" = "3-way" ; then
 		   UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch x86_64"
 		   LIPO_32BIT_FLAGS="-extract ppc7400 -extract i386"
-		   ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc7400"
+		   ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc"
 
 		 else
 	           AC_MSG_ERROR([proper usage is --with-universal-arch=32-bit|64-bit|all|intel|3-way])