Fix typo in setting PRIVATE_MODULE for AIDL source

Bug: 29619260
Change-Id: I59f883c1a92075800844cc2a77b307782a9ab800
diff --git a/core/java.mk b/core/java.mk
index 159de5a..85823b7 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -302,7 +302,7 @@
 $(aidl_java_sources) : $(LOCAL_ADDITIONAL_DEPENDENCIES) $(aidl_preprocess_import)
 
 $(aidl_java_sources): PRIVATE_AIDL_FLAGS := -b $(addprefix -p,$(aidl_preprocess_import)) -I$(LOCAL_PATH) -I$(LOCAL_PATH)/src $(addprefix -I,$(LOCAL_AIDL_INCLUDES))
-$(aidl_java_sources : PRIVATE_MODULE := $(LOCAL_MODULE)
+$(aidl_java_sources): PRIVATE_MODULE := $(LOCAL_MODULE)
 
 endif