Fix compiler warnings

Author: sebromero

extras/tests/TestFolderOperations/TestFolderOperations.ino

@@ -171,7 +171,7 @@ void setup(){
     #endif 
 
     #if defined(HAS_SD)
-        runTests(&&sd, "SD");
+        runTests(&sd, "SD");
     #endif 
 
 }

src/Partitioning.h

@@ -6,7 +6,7 @@
 
 constexpr int mbrBlockSize = 4096;
 constexpr int mbrPartitionType = 0x0B;
-constexpr char * mountPointName = "mountPoint";
+constexpr const char * mountPointName = "mountPoint";
 constexpr int maximumMBRPartitions = 4;
 constexpr int emptyPartitionType = 0x00;
 constexpr uint8_t mbrMagicNumbers[] = {0x55, 0xAA};