Use lzma -6 instead of xz -9; fix compiler error

bootimg.mk

@@ -8,9 +8,11 @@ endif
 
 $(recovery_ramdisk): $(recovery_uncompressed_ramdisk)
 	@echo -e ${CL_GRN}"----- Compressing recovery ramdisk (xz) ------"${CL_RST}
-	$(hide) xz -9c --format=lzma --lzma1=dict=16MiB $< > $@
+#	$(hide) xz -9c --format=lzma --lzma1=dict=16MiB $< > $@
+	$(hide) lzma -6c $< > $@
 
-$(INSTALLED_RECOVERYIMAGE_TARGET): $(MKBOOTIMG) $(INSTALLED_DTIMAGE_TARGET) $(recovery_kernel) $(recovery_ramdisk)
+#$(INSTALLED_RECOVERYIMAGE_TARGET): $(MKBOOTIMG) $(INSTALLED_DTIMAGE_TARGET) $(recovery_kernel) $(recovery_ramdisk)
+$(INSTALLED_RECOVERYIMAGE_TARGET): $(MKBOOTIMG) $(recovery_kernel) $(recovery_ramdisk)
 	@echo -e ${CL_GRN}"----- Making recovery image ------"${CL_RST}
 	$(hide) $(MKBOOTIMG) $(INTERNAL_RECOVERYIMAGE_ARGS) $(BOARD_MKBOOTIMG_ARGS) --output $@ --ramdisk $(recovery_ramdisk)
 	@echo -e ${CL_CYN}"Made recovery image: $@"${CL_RST}