valgrind suppression for zlib Flate Test

tools/valgrind.supp

 # Pass this file to Valgrind with "--suppressions=tools/valgrind.supp"
 
 # Third party lib, driver issues.
 {
     ati_driver_bug_1
     Memcheck:Param
     ioctl(generic)
     fun:ioctl
     ...
     obj:/usr/lib/x86_64-linux-gnu/dri/fglrx_dri.so
@@ skipping 95 matching lines @@
     fun:FcPatternObjectAddWithBinding
 }
 {
     zlib_bug_1
     Memcheck:Cond
     fun:inflateReset2
     fun:inflateInit2_
     fun:png_create_read_struct_2
     fun:png_create_read_struct
 }
+{
+    zlib_bug_2
+    Memcheck:Cond
+    fun:inflateReset2
+    fun:inflateInit2_
+    fun:_ZN12_GLOBAL__N_17doFlateEbP8SkStreamP9SkWStream
+    fun:_ZN7SkFlate7InflateEP8SkStreamP9SkWStream
+}
 
 # Why is it OK to suppress this?
 {
     SkRTConfRegistry_bug_1
     Memcheck:Leak
     fun:_Znwm
     fun:_ZN16SkRTConfRegistry12registerConfEP12SkRTConfBase
 }
 
 # The gpu_issue_* suppressions suppress issues that cannot be reproduced locally. These appear to be
@@ skipping 68 matching lines @@
 {
     gpu_issue_14
     Memcheck:Addr4
     fun:_ZN22GrAAConvexPathRenderer10onDrawPathERK6SkPathRK11SkStrokeRecP12GrDrawTargetb
 }
 {
     gpu_issue_15
     Memcheck:Addr2
     fun:_ZN22GrAAConvexPathRenderer10onDrawPathERK6SkPathRK11SkStrokeRecP12GrDrawTargetb
 }