bug fix

gRPC-Core.podspec

@@ -1307,6 +1307,6 @@ Pod::Spec.new do |s|
   s.prepare_command = <<-END_OF_COMMAND
     find src/core/ -type f ! -path '*.grpc_back' -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include "(pb(_.*)?\\.h)";#include <nanopb/\\1>;g'
     find src/core/ -type f -path '*.grpc_back' -print0 | xargs -0 rm
-    find src/core/ -type f -path '*.h' -or -path '*.cc' -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'
+    find src/core/ -type f \\( -path '*.h' -or -path '*.cc' \\) -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'
   END_OF_COMMAND
 end

src/objective-c/BoringSSL-GRPC.podspec

@@ -1546,7 +1546,7 @@ Pod::Spec.new do |s|
     sed -i'.back' '/^#define \\([A-Za-z0-9_]*\\) \\1/d' include/openssl/ssl.h
     sed -i'.back' 'N;/^#define \\([A-Za-z0-9_]*\\) *\\\\\\n *\\1/d' include/openssl/ssl.h
     sed -i'.back' 's/#ifndef md5_block_data_order/#ifndef GRPC_SHADOW_md5_block_data_order/g' crypto/fipsmodule/md5/md5.c
-    find . -type f -path '*.h' -or -path '*.cc' -or -path '*.c' -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'
+    find . -type f \\( -path '*.h' -or -path '*.cc' -or -path '*.c' \\) -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'
   END_OF_COMMAND
 
   # Redefine symbols to avoid conflict when the same app also depends on OpenSSL. The list of

templates/gRPC-Core.podspec.template

@@ -223,6 +223,6 @@
     s.prepare_command = <<-END_OF_COMMAND
       find src/core/ -type f ! -path '*.grpc_back' -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include "(pb(_.*)?\\.h)";#include <nanopb/\\1>;g'
       find src/core/ -type f -path '*.grpc_back' -print0 | xargs -0 rm
-      find src/core/ -type f -path '*.h' -or -path '*.cc' -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'
+      find src/core/ -type f \\( -path '*.h' -or -path '*.cc' \\) -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'
     END_OF_COMMAND
   end

templates/src/objective-c/BoringSSL-GRPC.podspec.template

@@ -1551,7 +1551,7 @@
       sed -i'.back' '/^#define \\([A-Za-z0-9_]*\\) \\1/d' include/openssl/ssl.h
       sed -i'.back' 'N;/^#define \\([A-Za-z0-9_]*\\) *\\\\\\n *\\1/d' include/openssl/ssl.h
       sed -i'.back' 's/#ifndef md5_block_data_order/#ifndef GRPC_SHADOW_md5_block_data_order/g' crypto/fipsmodule/md5/md5.c
-      find . -type f -path '*.h' -or -path '*.cc' -or -path '*.c' -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'
+      find . -type f \\( -path '*.h' -or -path '*.cc' -or -path '*.c' \\) -print0 | xargs -0 -L1 sed -E -i'.grpc_back' 's;#include <openssl/;#include <openssl_grpc/;g'
     END_OF_COMMAND
 
     # Redefine symbols to avoid conflict when the same app also depends on OpenSSL. The list of