Fix some typos [ci skip] (brianmario#1195)

Author: kamipo

README.md

@@ -148,7 +148,7 @@ results.each do |row|
   # the keys are the fields, as you'd expect
   # the values are pre-built ruby primitives mapped from their corresponding field types in MySQL
   puts row["id"] # row["id"].is_a? Integer
-  if row["dne"]  # non-existant hash entry is nil
+  if row["dne"]  # non-existent hash entry is nil
     puts row["dne"]
   end
 end
@@ -285,7 +285,7 @@ Mysql2::Client.new(
 
 ### Secure auth
 
-Starting wih MySQL 5.6.5, secure_auth is enabled by default on servers (it was disabled by default prior to this).
+Starting with MySQL 5.6.5, secure_auth is enabled by default on servers (it was disabled by default prior to this).
 When secure_auth is enabled, the server will refuse a connection if the account password is stored in old pre-MySQL 4.1 format.
 The MySQL 5.6.5 client library may also refuse to attempt a connection if provided an older format password.
 To bypass this restriction in the client, pass the option `:secure_auth => false` to Mysql2::Client.new().

ext/mysql2/client.c

@@ -45,7 +45,7 @@ static ID intern_brackets, intern_merge, intern_merge_bang, intern_new_with_args
   }
 
 /*
- * compatability with mysql-connector-c, where LIBMYSQL_VERSION is the correct
+ * compatibility with mysql-connector-c, where LIBMYSQL_VERSION is the correct
  * variable to use, but MYSQL_SERVER_VERSION gives the correct numbers when
  * linking against the server itself
  */

ext/mysql2/extconf.rb

@@ -154,7 +154,7 @@ def add_ssl_defines(header)
 $CFLAGS << ' ' << usable_flags.join(' ')
 
 enabled_sanitizers = disabled_sanitizers = []
-# Specify a commna-separated list of sanitizers, or try them all by default
+# Specify a comma-separated list of sanitizers, or try them all by default
 sanitizers = with_config('sanitize')
 case sanitizers
 when true

ext/mysql2/statement.c

@@ -456,7 +456,7 @@ static VALUE rb_mysql_stmt_execute(int argc, VALUE *argv, VALUE self) {
   }
 
   if (!is_streaming) {
-    // recieve the whole result set from the server
+    // receive the whole result set from the server
     if (mysql_stmt_store_result(stmt)) {
       mysql_free_result(metadata);
       rb_raise_mysql2_stmt_error(stmt_wrapper);

spec/ssl/gen_certs.sh

@@ -22,7 +22,7 @@ organizationalUnitName_default = Mysql2Gem
 emailAddress_default           = [email protected]
 " | tee ca.cnf cert.cnf
 
-# The client and server certs must have a diferent common name than the CA
+# The client and server certs must have a different common name than the CA
 # to avoid "SSL connection error: error:00000001:lib(0):func(0):reason(1)"
 
 echo "