protobuf-c: Fix typo in pkgconfig file

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/protobuf-c/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libprotobuf-c
 PKG_VERSION:=1.3.2
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE:=protobuf-c-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/protobuf-c/protobuf-c/releases/download/v$(PKG_VERSION)

libs/protobuf-c/patches/010-pkgconfig.patch

@@ -15,14 +15,14 @@
  INSTALL(CODE "EXECUTE_PROCESS (COMMAND ln -sf protoc-gen-c protoc-c WORKING_DIRECTORY ${CMAKE_INSTALL_PREFIX}/bin)")
  ENDIF()
  
-+CONFIGURE_FILE ("libprotobufc.pc.in" "libprotobufc.pc" @ONLY)
-+INSTALL (FILES "../libprotobufc.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
++CONFIGURE_FILE ("libprotobuf-c.pc.in" "libprotobuf-c.pc" @ONLY)
++INSTALL (FILES "../libprotobuf-c.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
 +
  INCLUDE(Dart)
  
  SET(DART_TESTING_TIMEOUT 5)
 --- /dev/null
-+++ b/build-cmake/libprotobufc.pc.in
++++ b/build-cmake/libprotobuf-c.pc.in
 @@ -0,0 +1,14 @@
 +prefix=@CMAKE_INSTALL_PREFIX@
 +exec_prefix=@CMAKE_INSTALL_PREFIX@