Fix compilation with "skia_enable_skparagraph = false"

Change-Id: I034d841618fbf878223c82ec30f0ad37678d737e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/443899
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/fuzz/oss_fuzz/FuzzSkParagraph.cpp b/fuzz/oss_fuzz/FuzzSkParagraph.cpp
index 125ef70..b619e0c 100644
--- a/fuzz/oss_fuzz/FuzzSkParagraph.cpp
+++ b/fuzz/oss_fuzz/FuzzSkParagraph.cpp
@@ -7,6 +7,8 @@
 
 #include "fuzz/Fuzz.h"
 
+#if defined(SK_ENABLE_PARAGRAPH)
+
 void fuzz_SkParagraph(Fuzz* f);
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
@@ -17,3 +19,5 @@
     fuzz_SkParagraph(&fuzz);
     return 0;
 }
+
+#endif