always add -fomit-frame-pointer if optimizations are enabled

Originally committed as revision 6601 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -1030,9 +1030,10 @@ if test $targetos = Darwin; then
                 ;;
         esac
     fi
-    if test $optimize != "no"; then
+fi
+
+if test $optimize != "no"; then
     add_cflags "-fomit-frame-pointer"
-    fi
 fi
 
 # Can only do AltiVec on PowerPC