Fix two comment typos.

Change-Id: Icb2d6f7fa97ef5a4409a7606875e416cfab0a4b3
diff --git a/libc/bionic/malloc_debug_common.cpp b/libc/bionic/malloc_debug_common.cpp
index 3a12cd4..adcc238 100644
--- a/libc/bionic/malloc_debug_common.cpp
+++ b/libc/bionic/malloc_debug_common.cpp
@@ -376,7 +376,7 @@
         }
     }
 
-    // Lets see which .so must be loaded for the requested debug level
+    // Choose the appropriate .so for the requested debug level.
     switch (debug_level) {
         case 1:
         case 5:
diff --git a/libc/bionic/malloc_debug_leak.cpp b/libc/bionic/malloc_debug_leak.cpp
index c13b520..ca00d4d 100644
--- a/libc/bionic/malloc_debug_leak.cpp
+++ b/libc/bionic/malloc_debug_leak.cpp
@@ -366,7 +366,7 @@
         alignment = 1L << (31 - __builtin_clz(alignment));
     }
 
-    // here, aligment is at least MALLOC_ALIGNMENT<<1 bytes
+    // here, alignment is at least MALLOC_ALIGNMENT<<1 bytes
     // we will align by at least MALLOC_ALIGNMENT bytes
     // and at most alignment-MALLOC_ALIGNMENT bytes
     size_t size = (alignment-MALLOC_ALIGNMENT) + bytes;