--- mozilla-release.orig/xpcom/ds/nsMathUtils.h
+++ mozilla-release/xpcom/ds/nsMathUtils.h
@@ -170,7 +170,7 @@
     // NOTE: '!!' casts an int to bool without spamming MSVC warning C4800.
     return !!_finite(d);
 #else
-    return finite(d);
+    return isfinite(d);
 #endif
 }