diff -up firefox-52.1.1esr/layout/style/nsCSSPseudoElements.h.old firefox-52.1.1esr/layout/style/nsCSSPseudoElements.h
--- firefox-52.1.1esr/layout/style/nsCSSPseudoElements.h.old	2017-05-17 11:40:23.609432532 +0200
+++ firefox-52.1.1esr/layout/style/nsCSSPseudoElements.h	2017-05-17 12:11:01.635624205 +0200
@@ -109,7 +109,7 @@ private:
 
   // Work around https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64037 ,
   // which is a general gcc bug that we seem to have hit only on Android/x86.
-#if defined(ANDROID) && defined(__i386__) && defined(__GNUC__) && \
+#if defined(__i386__) && defined(__GNUC__) && \
     !defined(__clang__)
 #if (MOZ_GCC_VERSION_AT_LEAST(4,8,0) && MOZ_GCC_VERSION_AT_MOST(4,8,4)) || \
     (MOZ_GCC_VERSION_AT_LEAST(4,9,0) && MOZ_GCC_VERSION_AT_MOST(4,9,2))