Remove uses of uninitialized

Author: quinnj

src/MySQL.jl

@@ -67,7 +67,7 @@ end
 Escapes a string using `mysql_real_escape_string()`, returns the escaped string.
 """
 function escape(conn::MySQL.Connection, str::String)
-    output = Vector{UInt8}(uninitialized, length(str) * 2 + 1)
+    output = Vector{UInt8}(undef, length(str) * 2 + 1)
     output_len = API.mysql_real_escape_string(conn.ptr, output, str, Culong(length(str)))
     if output_len == typemax(Cuint)
         throw(MySQLInternalError(conn))

src/results.jl

@@ -257,7 +257,7 @@ end
 Get a bind array for binding to results.
 """
 function mysql_bind_array(meta::MySQLMetadata)
-    bindarr = Vector{MYSQL_BIND}(uninitialized, meta.nfields)
+    bindarr = Vector{MYSQL_BIND}(undef, meta.nfields)
     for i in 1:meta.nfields
         bufflen = zero(Culong)
         bindbuff = C_NULL