mesa: fix an error in uniform arrays in row calculating.

Fix the error in uniform row calculating, it may alloc one line
more which may cause out of range on memory usage, sometimes program
aborted when free the memory.

NOTE: This is a candidate for 7.9 and 7.10 branches.

Signed-off-by: Brian Paul <brianp@vmware.com>

src/mesa/main/uniforms.c

@@ -513,7 +513,7 @@ get_uniform_rows_cols(const struct gl_program_parameter *p,
          *cols = p->Size;
       }
       else {
-         *rows = p->Size / 4 + 1;
+         *rows = (p->Size + 3) / 4;
          if (p->Size % 4 == 0)
             *cols = 4;
          else