fix errors during make init call

xcode/bootstrap/Makefile

@@ -44,7 +44,7 @@ init:
 
 	bundle install
 
-	$(call gen)
+	xcodegen
 
 	$(call install_pods)
 

xcode/build_phases/api_generator.sh

@@ -126,7 +126,7 @@ is_api_spec_under_source_control()
         IS_UNDER_SOURCE_CONTROL_CHECK=`git -C ${API_SPEC_DIR} rev-parse --is-inside-work-tree 2>/dev/null`
     fi
     
-    if [ ${IS_UNDER_SOURCE_CONTROL_CHECK} = "true" ]; then
+    if [ "${IS_UNDER_SOURCE_CONTROL_CHECK}" = "true" ]; then
         echo ${TRUE}
     else
         echo ${FALSE}