fix for Solaris sh

* Makefile.in (mjit_config.h): removed unnecessary assignment.

* tool/mjit_archflag.sh (define_arch_flags): need to quote on
  Solaris.  [ruby-dev:50669] [Bug #15319]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65808 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Makefile.in

@@ -601,7 +601,7 @@ mjit_config.h:
 	quote "MJIT_DLDFLAGS    MJIT_ARCHFLAG" $(MJIT_DLDFLAGS); \
 	quote "MJIT_LIBS       " $(LIBRUBYARG_SHARED); \
 	quote 'PRELOADENV       "@PRELOADENV@"'; \
-	indent=$${archs+  } define_arch_flags; \
+	define_arch_flags; \
 	echo; \
 	echo '#endif /* RUBY_MJIT_CONFIG_H */'; \
 	} > $@

tool/mjit_archflag.sh

@@ -29,7 +29,7 @@ parse_arch_flags() {
 }
 
 define_arch_flags() {
-    local indent=${archs:+  }
+    local indent=${archs:+'  '}
     ${archs:+echo} ${archs:+'#if 0'}
     for arch in $archs; do
 	echo "#elif defined __${arch}__"