fixing AIX optimization issue with jsatom.c

# 161542
r=cls@seawood.org
submitted by pkw@austin.ibm.com, checking in for khanson@netscape.com

js/src/Makefile.in

@@ -318,8 +318,10 @@ endif
 # An AIX Optimization bug causes PR_dtoa() & JS_dtoa to produce wrong result.
 # This suppresses optimization for this single compilation unit.
 ifeq ($(OS_ARCH),AIX)
+jsatom.o: jsatom.c Makefile.in
+	$(CC) -o $@ -c $(filter-out $(MOZ_OPTIMIZE_FLAGS), $(COMPILE_CFLAGS)) $<
 jsdtoa.o: jsdtoa.c Makefile.in
-	$(CC) -o $@ -c $(filter-out -O, $(COMPILE_CFLAGS)) $<
+	$(CC) -o $@ -c $(filter-out $(MOZ_OPTIMIZE_FLAGS), $(COMPILE_CFLAGS)) $<
 endif
 
 # MSVC '-Gy' optimization flag causes JS_GetArgument and JS_GetLocalVariable