Trivial cleanup of recent changes.

A typo in the documentation for one, and a couple of signed/unsigned warnings
in the implementation of the other.

Change-Id: I8fb4b7448ac901c543dea7420aabcedf13ec1bd8

init/Android.mk

@@ -17,7 +17,11 @@ LOCAL_SRC_FILES:= \
 	ueventd_parser.c \
 	watchdogd.c
 
-LOCAL_CFLAGS    += -Wno-unused-parameter
+LOCAL_CFLAGS += \
+    -std=gnu11 \
+    -Wall \
+    -Werror -Wno-error=deprecated-declarations \
+    -Wno-unused-parameter \
 
 ifeq ($(strip $(INIT_BOOTCHART)),true)
 LOCAL_SRC_FILES += bootchart.c

init/builtins.c

@@ -221,16 +221,15 @@ int do_execonce(int nargs, char **args)
          */
         zap_stdio();
         char *exec_args[100];
-        int i;
-        int num_process_args = nargs;
+        size_t num_process_args = nargs;
 
         memset(exec_args, 0, sizeof(exec_args));
         if (num_process_args > ARRAY_SIZE(exec_args) - 1) {
-            ERROR("exec called with %d args, limit is %d", num_process_args,
+            ERROR("exec called with %zu args, limit is %zu", num_process_args,
                   ARRAY_SIZE(exec_args) - 1);
             _exit(1);
         }
-        for (i = 1; i < num_process_args; i++)
+        for (size_t i = 1; i < num_process_args; i++)
             exec_args[i - 1] = args[i];
 
         if (execv(exec_args[0], exec_args) == -1) {

init/readme.txt

@@ -123,7 +123,7 @@ boot
    Triggers of this form occur when the property <name> is set
    to the specific value <value>.
 
-   One can also test Mutliple properties to execute a group
+   One can also test multiple properties to execute a group
    of commands. For example:
 
    on property:test.a=1 && property:test.b=1